Considering what he did against Megatron, I would say he would be in the running. Peanut also has a bunch of tackles, and passes defended.
Tillman has 74+ tackles, 3 INT, 3 TD, 10 FFUM, and 13 Passed Defended
Watt has 77 tackles, 20.5 sacks, 15 Passes Defended, 4 FFUM
Smith has 58 tackles, 19.5 sacks, 3 FFUM, 1 INT
The fact that 2 players will have 20 sacks sort of reduces the feat for me. Watt will get it due to the hype.