Levitre made all 64 starts in his four years with the Bills. Buffalo averaged 4.7 yards per rush with Levitre on the field (which would have ranked seventh best as standalone total) and 4.1 yards per rush without him (which would have been 19th).
That stat right there makes it pretty obvious why Levitre was the Titans #1 target in free agency this offseason. They are developing a power running game, and Levitre makes the running game almost a yard per carry better. That is a pretty significant difference.
The question now is if any other Titan will show up on this list. With the exception of Chris Johnson and maybe Nate Washington, I cannot think of anyone else that would be in the top 80.