Scotley
Hero
Scotley, as always, is absolutely correct. I bow to his wisdom. I plead infection of my brain by Pathfinder.
Oh, and DeWar, "Extra damage, over and above the weapon's normal damage," is referring to things like sneak attack damage and poison damage, NOT strength, feat, and magic bonuses.
Yeah, Leif's interpretation is the way I've always read it. I think somewhere sneak attack is specifically excluded. It is only +12 and a d10, so 21 is pretty close to max. He's pretty good at smashing things, but a bit of a one trick pony. Well maybe two as he can disarm or trip pretty effectively as well.