UndercoverMan said^It seems both books condemn homosexuality, so I'd say one religion is not inherently more anti gay than the other.
Not correct. Jesus never said anything against homosexuality. Not only that but the Bible is quite clear that the New Testament overrides the Old Testament and homosexuality is not mentioned in the New Testament. The Koran, like the Bible also instructs us to follow the most recent scriptures. This is where the two books go in the exact opposite directions. The later scriptures of the Koran are the most violent and hate infused. It is quite clear that homosexuals should be put to death. Not only that, but if a man is raped by another man, he too is to be stoned to death. Effeminate men are also cursed in the Koran, even those who do not have sex with men.
The New Testament overrides the Ten Commandments?
36 “Teacher, which is the greatest commandment in the Law?”
37 Jesus replied: “‘Love the Lord your God with all your heart and with all your soul and with all your mind.’ 38 This is the first and greatest commandment. 39 And the second is like it: ‘Love your neighbor as yourself.’ 40 All the Law and the Prophets hang on these two commandments.”
Jesus didn't say, "Law? What law? You don't need to follow no stinking Old Testament Law!
17 “Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfill them. 18 For truly, I say to you, until heaven and earth pass away, not an iota, not a dot, will pass from the Law until all is accomplished. 19 Therefore whoever relaxes one of the least of these commandments and teaches others to do the same will be called least in the kingdom of heaven, but whoever does them and teaches them will be called great in the kingdom of heaven. 20 For I tell you, unless your righteousness exceeds that of the scribes and Pharisees, you will never enter the kingdom of heaven.
Jesus came to fulfill the law not abolish it. His words not mine. Does that mean we are to follow all the dietary and other laws of the Old Covenant? Of course not. However, in applying Jesus' law of love we fulfill all the necessary laws of God.
Matthew 15:11 It's not what goes into the mouth that contaminates a person in God's sight. It's what comes out of the mouth that contaminates the person."
Now, the New Testament has prohibitions against homosexuality and because of that I have to say Christianity isn't any more or less inherently anti homosexuality than Islam. I will grant you Islam's followers' treatment of gays is abhorrent. Christians do not throw homosexuals of buildings but their treatment of gays through the centuries hasn't been exemplary either.