Okay, this is only a supposition:
Western homosexuality involves impersonal sex with hundreds of partners, including disease-spreading acts such as urination, defecation, and abrasive (bleeding) penetration.
Muslim homosexuality must be less promiscuous and more restrained.
Also, in Western societies, AIDS victims are treated like heroic saints. In Muslim societies, they're put to death. In Western societies, they're revered as martyrs. In Muslim societies, they're martyred.