Chris DiMarco can't seal the deal

I like Chris DiMarco as much as the next guy. He's got that weird swing, strange putting style and ability to hit pure long irons.
But he lacks the closing power to become a golf superstar. We saw it at the Masters, last year's PGA Championship and today's tournament in New Orleans.
DiMarco, as ususal, shot a solid final round, but was bested by golfers who could, in the words of a New Orleans chef, kick it up a notch. Bam. And DiMarco was history.
Sure, there were all those articles following the Masters about DiMarco being the people's player, but what kind of star just can't win. He was beaten by Vijay last August, by Tiger in April, and now by Tim Petrovic, a former pizza deliveryman who is 38 and has never won anything of any significance.
So is DiMarco now the best player never to have won a major (surpassing the likes of Sergio Garcia) or the most overrated player about?