Right fighter, wrong rivalry.
Hendo and Bisping never really disliked each other. Although Bisping won the rematch on points (rightfully so), he still got beat up.
Rockhold v Bisping is a genuine rivalry. Bisping utterly humiliated him in the 2nd fight. He won the shit talk prior to the fight, Conceive, Believe, Achieve is actually a catchphrase now. He KO'd him in the first round during the fight. The post fight presser for that fight is the stuff of legend, Bisping utterly dismantled Rockhold so badly there hasn't been a post fight press conference in that format since.