The difference is that the Koran actually says for men to "lightly hit" their wives. It also commands other things listed below...so while it may be hypocritical to hit your wives in Christianity, not so for the Koran.
But, I would argue that Muslims are much more zealous in their faith. While this is just my own opinion, I find other faiths (Islam, Jehovah Witnesses and Mormons) much more dedicated to their faith than your average Christian.
Because of this, I correlate zealous religious teachings applied to the society in and of itself.
"Part of the problem dates to Muhammad. Even as he proclaimed new rights for women, he enshrined their inequality in immutable law, passed down as God's commandments and eventually recorded in scripture. The Koran allots daughters half the inheritance of sons. It decrees that a woman's testimony in court, at least in financial matters, is worth half that of a man's. Under Shari'a, or Muslim law, compensation for the murder of a woman is half the going rate for men. In many Muslim countries, these directives are incorporated into contemporary law. For a woman to prove rape in Pakistan, for example, four adult males of "impeccable" character must witness the penetration, in accordance with Shari'a.
s Riffat Hassan, professor of religious studies at the University of Louisville, puts it, "The way Islam has been practiced in most Muslim societies for centuries has left millions of Muslim women with battered bodies, minds and souls."
The Women of Islam - TIME
The violence and oppression of Muslim men and women is enough to convince me of its invalid and evil ways and ultimately worshiping a false god.