My point though, is not many faces get long runs these days either.
I think Cena has been the only face to get anywhere near a decent run with the belt.

Faces tend to be transitional these days.

One of the things thats been said a lot in recent times is that fans grow weary of faces as champions, and prefer to see them chase for the title rather than win it.

Guys like Mysterio, Cena and Batista have all suffered heavily as champions, only to regain their momentum as the underdogs chasing the belts.