I don't see the problem either.
Sure, the passes were on the edge, but instead of not even trying it and getting stuck behind he went through the grid like a hot knife through butter. Of course those maneuvers won't always work (he will only try that once with DC), but for being successfull you have to be an ass on track sometimes, instead of pulling over like Massa which, even with maybe "bad brakes and tires" who didn't even try to block him there...
What the hell was he thinking? Of course Hamilton would try, as would any other driver (with the will to win). And his car can't be that bad or did anyone see that he had trouble keeping Heidfeld behind?
It's not like Schuhmacher (or Senna, or Prost, or whoever) never tried thoses passes. Hell, just look at the last MotoGP Race in Laguna Seca...