Well, it's obvious how the Yankees saw it.
They saw a player whose home/road splits suggested that Comerica Park killed him. Granderson hit just .230 at home last season, with a gruesome .388 slugging percentage and only 10 homers in 309 at-bats.
But everywhere else, Granderson slugged .516, with 20 homers in 322 at-bats. And he hit 25 of his 30 homers to right field -- the fourth-highest total in the American League (behind Mark Teixeira, Carlos Pena and Hideki Matsui).
So you think he might do a little damage in Yankee Stadium, or what?