You'd be hard pressed to find a QB that played with worse overall skill position players and a worse offensive line.
Bradford's rookie season was outstanding when you consider that he had Brandon Gibson and Laurent Robinson as his starting WRs, Billy Bajema as his starting TE, and Rodger Saffold (a rookie in 2010), Jacob Bell, Jason Brown, Adam Goldberg and Jason Smith as his starting offensive line. He did have Steven Jackson, so that helped, but the rest was hot garbage. Of the above listed group, only Saffold and Gibson are still in the NFL.
And, Bradford managed to have that team one game from making the playoffs. He's fragile, and not an All-Pro, but he hasn't been horrible in his career.