There is a substantial difference here - I have never seen Orthodox Jews sawing someone's head off while chanting Yahweh is Great.
No, they’re not the same, though the present-day violent tendencies of a big chunk of the Muslims world probably have more to do with politics than religion. And a few hundred years ago, a substantial of chunk of the Christian world was engaging in barbaric practices, both within its own societies and on “crusades” to non-Christian lands. Again, I don’t think the specifics of Christian theology are to blame. When people are inclined towards barbarism and live in a culture which claims any ancient scriptures as the ultimate truth and law, they’ll have no trouble finding justification for barbarism in their scriptures. But absurd religion-based beliefs and practices such as those cited in this article are certainly not unique to Islam (or to Islam and Judaism), and are therefore not valid evidence of Islam being somehow uniquely uncivilized. The breast-feeding thing is just a laughable indication of the subconscious yearnings of that particular fatwa-issuer.