What I'd like to know his exactly how much protection warrior dps as changed. All the talents seem too good to be true.
Protection Warriors seems like one of the class/spec combos that have changed the most in Wrath. Their tanking is incredible and a lot more versatile now (all tanks are, actually) but you're asking about DPS and not tanking! Their DPS is good. It's not as high as DPS classes/specs, but it's not abysmal like it used to be. You might actually be DPSing with your shield equipped for the huge Shield Slam crits rather than dual wielding, even when you're not the one being beat on.
I don't have any concrete numbers or DPS charts for you, but I can say that what I've seen is really, really impressive. In yesterday's Ask a Beta Tester, reader Friday Knight gave you some more in depth information about the rotations of each spec, so I recommend reading that if you missed it. His information and what I've seen myself makes me want to gear up a Prot Warrior alongside my Prot Paladin instead of having just one tanking character.