Self-fufilling prophecy or Law of Average

Brad Hawpe situation blows my mind or rather
 his critics blow my mined People said he couldn't hit lefties but there wasn't a huge difference in his batting average between lefties and righties in 2008, 2009 and 2005. To me it seems that the law of average says any batter would eventually hit his ~b.a. regardless of whether the pitcher was a rightie or a leftie. As another example look at Pujlols stats. Sure there are some batters who have drastic deviations in the b.a. when it comes to lefties and righties but those are really rare, in my opinion (i.e. I should probably research my opinion). Anyway my point is how do we not know that Brad Hawpe was in the start of a slump in 2007 when he goes against leftie pitching? What if the critics were just saying that he couldn't hit left handed and it became the self-fuffiling prophecy for 2007. Now all of sudden in 2009 he's an All-Star, please who didn't see this coming, he's a great player!

Anyway, for lack of a better conclusion. I think more analysis is needed on the lefty vs righty b.a. differences. Coming soon to you an Excel spreadsheet!!!!! Let me know if anyone of you guys want to join in on this madness.