I'm a noob and I have no excellant fighters, however I just thought to throw my two cents in, I bet that little stat that we can't see, "luck" effects that skill, try in achievements to add luck to your character and see if it triggers a little more often. I might just be talking stupidity, but I read what nate said about it, and he didn't really nail exactly what all luck effects, and I'm not saying this attributes huge, I'm just thinking it effects it a little at least.