Please allow me to answer your questions one at a time:
First, I will start with "DOES SEX-IN-ISLAM’S JANNAH … implicates Islam as an un-HOLY religion??":
In the Holy Qur'an (which I read and listen to everyday), I have never came across the word sex. Tell me, when a man and a woman are married and have sex, is it unholy? It is legal and holy and allowed for them to do as a married couple. Another thing is, there is no such thing as an Islam's Jannah, or a Christian Heaven or a Jewish גן עדן - which means paradise in Hebrew. it is only Heaven, The Eternal Garden that all with pure hearts will enter. In heaven, one can do as they please; that is why it is heaven. If only pure-hearted people can enter heaven, then they will not commit acts of evil in it. So no, if one were in heaven with their husband/wife, there isn't anything unholy about them having sex.
Secondly, I shall answer to "Does Deedat imply God procreated Jesus from SEX?":
I do not know Deedat, I have heard of him (that he is a Muslim speaker), but let me assure you that Mary gave birth to Jesus, the Messiah, miraculously. There was no Father. Jesus was NOT procreated through sex. Had Allah wished, Mary could have had a husband and had a child with him. But, at the time of Mary, Allah (s.w.t.) saw that no one was fitting to be the husband of, The Holy Virgin, Mary. If you wanted to go biologically into this situation, only Allah (s.w.t.) will be able to tell you how He created Jesus without a father. I do not know the quote in which you thought Deedat implied this, and you did not provide a quote, so i can not say he was right or he was wrong.
Thirdly, I shall answer "Is this why muslims assume there will be SEX in their heaven?":
To not tie the words of the common people to any religion. If a Muslim were to say something completely stupid and irrational, will you say that Islam is this way? NO, you will say that the individual who uttered those words is full of baloney. That individual is NOT a representative of the Religion, and I guarantee you that if someone is a representative of Islam, they shall NEVER utter something that: does not make sense, something ludicrous, something irrational, etc. So don't color an entire community with the same paint because of the words of the few, young, know-it-all fakers. And again, the thing about sex in heaven, if it is legal, then IT IS LEGAL. Are you going to tell me that one can have sex with their spouse on Earth and not in Heaven? That doesn't make any sense. So I hope I answered your questions regarding sex in heaven.
Fourth, I shall answer to "No use looking in the quran b/c Surah 5:47 states the bible judges the quran, NOT VICE-VERSA!":
It seems like you had someone who doesn't know either English nor Arabic translate this verse of the Holy Qur'an to you. Allow me to translate this verse. In the Holy Qur'an, Surat Al-Maeda (5), verse 47, The real translation is: "And the People of the Ingeel(Bible) have made judgements by which Allah (s.w.t.) has brought down to them in it (the Ingeel); and whoever does not judge by with what Allah (s.w.t.) has brought down, then (surely) they are of those who are evil-doers." This means that Christain, as followers of the Ingeel, have the right to make judgements based off of the Ingeel. It is to tell Christians and Jews (it also implies that people of the Tawrat(torah) have the right to make judgements off of the Tawrat) that The Holy Qur'an and The Ingeel, And the Tawrat, and the Zaboor (Psalm) are all from Allah (s.w.t.)! Why should one book say something other than another if the author of all these books are Allah (s.w.t.) Himself?
The only reason why the Holy Books say different things is because people have tampered with their Holy books (when translating and when interpreting). To be honest, those who read the Holy Ingeel should not read it in English, they should read it in the language in which it was originally written; in Hebrew, Aramaic or Greek (Greek because during the life of Jesus, the Messiah, the Roman Empire had conquered most of the Known World at the time, and they spoke Greek). People of Jewish faith should only read the Holy Tawrat in Hebrew, and Muslims should only read the Holy Qur'an in Arabic. If they are not willing to learn the language in which their Holy books were written, they have a major problem in their personal faith. I say all this so that you will understand that translations will cause misunderstandings as you just had (hopefully i cleared up that misunderstanding).
Last but not least, I shall answer to "Doesn’t Islam understand that the words Deedat assumed are sexual are actually … SPIRITUAL(Rom 8:10-17) ???? If muslims believe God the father is … ALLAH, then this is what God the father in the bible refers to sex from the bible.":
First, Islam is not a person, creature or entity that is capable of understanding. I know what you mean, but it is for future reference so that you choose your words more appropriately. Islam is Only Best represented By The Holy Prophet Mohammad (peace be upon him and his family), And the 12 Imams (peace be upon them all), their pupils, and their pupil's pupils. You have again not provided a quote from Deedat's showing his implementations, so i can not make any comment on that.
Secondly, Islam does NOT believe that any of Allah's (s.w.t.) names or titles is the Father. In Islamic monotheism, Allah does not give birth nor is he begotten. He is the Creator of All things, Seen and Unseen. He is not The Father, The Son Or the Holy Spirit. To be a father, one NEEDS a son or daughter and a wife. This NEED can not exist in the presence of All-Mighty Allah (s.w.t.). He does not need anything and everything is in need of Him. He is the Creator and we are all the created. A speech from a real representative of Islam regarding Allah (s.w.t.), Imam Ali ibn Abi Taleb (peace be upon him and his family):
(An English translation):
"Place does not contain Him, nor is He contained in time, nor do attributes define Him with due respect, nor does sleep overcome Him. His existence preceded time itself, He preceded nonexistence, and His Eternalness preceded all beginnings. He was Lord Before there was anything to be Lord of. He was God before there was anything to be God of. He was All-Knowing before there was anything to be known. He was All-Hearing before there was anything to be heard. Faces surrender before His Grandeur, hearts tremble exceedingly in fear of Him, and the soul(s)(of people) strive(s) desperately to attain His full satisfaction."
I apologize for the long response. I hope you enjoyed and learned from this. I also hope you got your questions answered. If you have any other questions, or wish to learn about Islamic Monotheism, please post them up and I will give you a response.