Islam is a mono-cultural ideology that by definition tolerates no other cultures on basis of equality.
Christianity is hardly a beacon of equality either. According to Christianity, Christians will be rewarded with everlasting paradise, and everyone else will be punished with everlasting torture, and this is right and just, because they are evil and deserve it, and it is the will of an all-loving god. By no means does this view espouse equality. Granted, Jesus tells his followers not to be violent, while he'll bring an army of angels to cast the unbelievers into the pit of fire that they deserve. (Do as I say, not as I do.) That said, if a Christian should kill an unbeliever, they will be forgiven, and still go to heaven, while the unbeliever will still burn in hell.
Think not that I am come to send peace on earth: I came not to send peace, but a sword. (Matthew 10:34)
Christianity inspired the crusades, inquisitions, and witch hunts. (Seriously, if you think you've got the seed of Satan spreading evil among you, and they deserve to be killed, and you'll be forgiven for killing them, would you not?) The practice of religious tolerance in the West began begrudgingly in response to wariness from over a hundred years of Christian infighting in the European wars of religion. Modern liberal Christianity (the "don't be such a literalist, when Jesus said non-believers deserve to be burned, it was a metaphor for something nice" variety) draws its morals from the Enlightenment (atheist thought), not Christianity, although it steadfastly refuses to acknowledge it. Modern liberal Islam is relatively benign mental masturbation in the same vein.