I think it's safe to say that Pence is flying a bit under the radar, although that may be in large part due to the fact that he only this week met the AB requirement for the batting title.  He most likely wouldn't have gotten the fan vote over Bonds, Beltran, and Griffey, and would have had to be selected either by the player vote or the manager selection.  The other OFers selected are Matt Holliday, Alphonso Soriano, Carlos Lee, and Aaron Rowand, all legit all-stars in their own right.  Here are some comparison stats:

Player    AVG /  OBP /  SLG / HR / RBI /  AB
Holliday .352 / .404 / .584 / 14 /  68 / 344
Soriano  .305 / .351 / .536 / 15 /  31 / 334
Lee       .295 / .348 / .515 / 16 /  72 / 332
Rowand   .309 / .385 / .472 / 11 /  43 / 307
Pence    .345 / .372 / .593 / 11 /  40 / 258

He definitely stacks up pretty well, and in writing these out, even as somebody that's quite familiar with how much he's tearing it up, I'm forced to say... DAMN, I didn't know his numbers were THAT good!  Anyway, he'd have to overcome the previous reputation of all of these players and in the case of Rowand, the defensive prowess.  I don't know that it'd be so cut and dry.