If you look at Detroit, they had 2 with Ebron and Pettigrew. The Bills did a very good job shutting them down.
The only team to have real success with their TE was the Bears. Chargers/Rivers went to Green when Gates wasn't open and that worked, although they weren't able to score.
The average game for a TE so far has been 49.8 yards, 5.6 Rec, and 0.2 TD.