http://espn.go.com/nfl/player/stats/_/id/9638/greg-jennings
Jennings was a beast in his prime. 2008-2010. And you seriously are averaging stuff. Jennings got hurt in 2011 and 2012. Go by game, not by season.
Nelson is an increbile weapon. Cobb for the 2012 season huge and half of 2013. Still better than Burleson by far. And both Cobb and Burleson played half the year.
Jones is a very solid player. He's more like Burleson stat wise but Burleson was the 2, Jones was the 3 in Green Bay. Weapon central. And Jones is 30 by the way. That explains his contract. Jennings got paid.
Finley when healthy was good for 650-700 yards. That is a good TE. 12 YPC or more. Had two 14 YPC seasons. Pettigrew is 10 YPC guy.
Stafford had one year with multiple weapons. 2011. And he produced like Rodgers. And Burleson as a 2 and rookie Young really weren't even that good. Finley>Pettigrew. Having Jennings and Nelson and Cobb>Calvin.