My thoughts:
Henson: C-
Threw a bad pick deep into a cover 2 when there appeared to be an open receiver crossing right in front of him; threw the sideline pass that should've been picked and had a few other bad passes. Once again, however, the line was shaky for him and we had no running game on his first two drives. He moved the team into the red zone twice, got hosed by a Morgan drop that would've been first & goal and threw a couple of nice passes after his pick, which was nice to see. It also helped that the running game finally came around on his last drive. Henson looks much better in shotgun, as it eliminates his annoying, half-second hitch on the center exchange.
Romo: C-
Madden and Michaels way overplayed the "Romo looks more comfortable" angle, IMO. Romo's first pass to Crayton was a beauty, but it was also his best of the night. His velocity looked better on some passes, but that third-down, lollipopped, throw away into the middle of the field (inexplicably dropped by the Seahawk defender) was perhaps the worst pass of the game. He had little to work with but made a few plays, none of them particularly impressive.
Bledsoe: C-
Nice TD drive but should've done more with two short fields and the first-team O; Seattle dropped an easy pick on his watch, also
Bottomline, all our QB's look shaky to me. Bledsoe's last drive was nice, but it is becoming very clear that our offense goes as our running game goes. Period. Unlike Henson or Romo, I expect Bledsoe to make a few long plays with his arm and I'm just not seeing it. Pretty scary...