Safeco Field: .188/.212/.250 0 HR 1 RBI 32 AB
Rangers Ballpark: .306/.382/.694 4 HR 12 RBI 49 AB
Oakland Coliseum: .256/.275/.282 0 HR 0 RBI 39 AB
Wells doesn't exactly dominate in the different stadiums of the AL West. The smaller confines of Yankee Stadium, Tropicana Field and Fenway Park aren't going to be around—not that Wells was dominating in any of those places either.
The Oakland A's have a tremendous pitching staff, as well as an improved offense, and the Texas Rangers have one of the best offenses in baseball. The Angels might not have everything they need to keep up in the division, even with the addition of Wells.
Prior to the Wells trade, many baseball insiders had the Angels finishing third in the AL West. I don't think adding Wells improves that projection very much.
Yes, a change to regular grass should help Wells' knees and maybe improve his speed in the outfield, but the Angels have to bank everything on Wells having yet another bounce-back season in 2011.
It's an $86 million gamble.