No, you have to consider that the rerolling of ones and twos isn't indefinite. They're only rerolled once. So, if you roll a two and reroll, you might get a one. In which case, you have to use the one.
So, savage attacker lessens that probability allowing your initial reroll to be favorable.
And while 1d12 will over time give more extreme ends than 2d6, that doesn't remove extreme ends from larger dice pools.
All I'm saying is that savage attacker isn't that bad.
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Regarding percentages to hit... shrug. If it's easy to begin with, it doesn't seem to matter how much easier it gets, at least from what I can tell. I guess what I'm saying is that I seem to hit just about all the time even when I don't optimize a build.
