What I'd really like to know (and it would be difficult to determine) is if the KC return team as a whole stayed pretty much intact during those seasons. Did they get an opportunity to grow together as a unit? Did they bring in a couple of guys that helped turn that unit around? I've always believed that continuity was just as important on special teams as any other unit.
Does anyone remember the guys who were on the return teams last season? I remember Peek due to his propensity for picking up penalties. Guys like Evans, Wright, Bell, & Walker have been in the Texans system for 3 years now. I expect more consistent results (fewer penalties) from the return team no matter who is carrying the rock.