From the inimitable HitTrackerOnline, here are Lance Berkman's 2010 homers (blue) layered over the dimensions of New Yankee Stadium:
Now, I recall from the HR Derby in 2004 that the ball flies best to left field at Minute Maid, so that might be part of it.
But when I went over to Berkman's BRef splits, those numbers confirm the graphs' impressions:
|Ball In Play||83||215||215||60||16||1||0||.279||.279||.363||78||.279||58||88|
Berkman's best success, both in terms of hits and power, come when he takes the ball the opposite way. I honestly don't know how those numbers stack up against league averages, but I'd think most hits and power come to the pull side.
Hopefully Berkman won't change his approach- the Yankees don't need him to pull every pitch over the short porch, they just need him to get on base and keep the line moving.