Time for an actual legitimate post:
Based on this thread I might be in the minority, but I think Kelsay is a better DE than Denney.
I think Denney is stronger than Kelsay, and is a very serviceable back up who provides depth but I would say that overall Kelsay is the more complete DE. Against Pittsburgh's first string last week Kelsay was getting good pressure and would have had a sack had he not be blatantly held on the Ko Simpson caused Interception. 2007 Kelsay did not earn his contract, but if Kelsay can play like he did in 2006 than I will be at least content with his play. Kelsay seems to be able to generate pressure from time to time, it looked like Denney wasn't able to do the same against Pittsburgh's first stringers.
Mind you he only got 5.5 sacks, but he got a decent amount of tackles and a lot of his tackles were for stuffs or for a TFL. Chris Brown's season awards at the end stated that 17% of Kelsay's tackles were Tackles for a loss, the highest percentage on the team.
Kelsay will never be a probowl player, but he tries on every play. He has the skills to be a solid, although unspectacular player for the Bills. And he seems like the type of player the Bills will be glad to have had on their team.