... maybe if you're just talking the U.S. or something, FD. Christian radical groups are still managing to keep about on par with Islamic ones go so far as depth of atrocity and whatnot goes, for all that they get basically sod all news coverage despite cheerfully raping and mass murdering and such. Can't recall how bad things are so far legal enshrinement, but there's certainly places in the world that boil down to "be christian or else," even if they don't announce it on the streets. Head south of the border, roam around africa a bit. Places still exist, and there's still a fairly notable amount. And conquest wise, well. How many of the more militarily aggressive countries over the last few decades/centuries have been operating under a christian majority, again? Not quite charitable enough to give Christian nations a by because of a veneer of secularism, personally. The leaders and polity supporting them still are what they are. Always seemed like you need pretty heavy blinders to comfortably say chistianity's been acting that much better in recent (single digit, decades, century or two, whatever) years, really... could definitely say its involvement is downplayed pretty heavily from a lot of angles, though.
Honestly, if there's any genuinely major difference between the actions of abrahamic religions, I'd probably blame most of it just on who's actually in power. The fed beast trends toward sessile, et al. Organizations in control for a long time often get kinda' lackadaisical, and Christianity has been top dog for quite a while indeed...