My statement was that Pedrioa is as successful as he is because of his grit, not that his grit impacted many games. I don't see it as the same thing, but if you do, then fine. I have no problem with that. Show me some stats that prove or give evidence to the contrary, and I will have to reconsider my statement. Until then, I will hold firm in my belief that Pedroia's grit is a big part of the player that he is.
I am a strong believer in both stats and the human element. I don't think the two things have to be mutually exclusive, as it seems you are trying to make them. I think there are some things that can't be quanitified by stats. However, when the stats show evidence against something that I believed, I have had to rethink my position. If there is no evidence one way or another, then I will believe what I believe.
As far as base stealing being a possible catalyst for momentum, I agree. I never said otherwise.