The Jets have tremendous depth at the RB position...probably even better then the Raiders. Leon Washington is an up and coming big play/3rd down back with starting experience and Cedric Houston has started before and runs really well near the goal line...not to mention we have the starting RB off a Superbowl team in Thomas Jones. The Jets are deep.
The Jets are pretty deep, but none of the guys you mentioned behind Jones are "proven #1 back" types. Neither are the Raider backups, that was really my point. Love the avatar.