Is Sanchez The Worst QB in the League?

This statistic suggests so:

Since the start of the 2008 season, no quarterback has cost his team more net points than Sanchez, if replaced by a league-average quarterback. Sanchez has been worth minus-75.0 points to the Jets over the course of his career -- worse than JaMarcus Russell, Derek Anderson, Jimmy Clausen, et al.

Yowza! Tebow Time!