I'm sure none of his RBIs have ever helped the Yankees win a game, let alone a World Series. Of course all of Jeter's career hits have come at crucial times.
Anti-A-Rod arguments are so old and simple-minded. There is no denying that A-Rod pressed in several postseasons, but to suggest that he hasn't been a significant part of the team's success for nearly ten years is silly.
People believe that A-Rod isn't "clutch" (whatever that means) so when he does get a big hit, they forget it. When he does fail, they add it to their pile of evidence that he isn't "clutch." People do the opposite with Jeter.