Seriously? Weidman's biggest wins are decisioning Maia (who then dropped to WW) and a KO/TKO of Munoz. The elbow to Munoz was very impressive, but I'm still not sold on Weidman getting a titleshot. One impressive win shouldn't get you a titleshot.
Vitor just KO'd Bisping, lost to JBJ on short notice but almost got the sub early, chocked out AJ, and KO'd Sexyama. Yes he was KO'd in highlight reel fashion in his last fight with Silva but that was a very flukey KO (no disrespect to Silva).
I say Silva/Rockhold as a champ vs champ match, Vitor/Weidman for the #1 contender.