I guess because it was a very entertaining fight. In saying that though, I don't know what more Pascal could do to win. It would likely be the same, but maybe not such a dodgy stoppage. Rematches should be for really close fights, but Pascal was almost at the stage where he would need KD's or a stoppage and typically that doesn't warrant an immediate rematch. Groves/Froch sure as Groves was clearly winning, but Kovalev was winning this one. Kovalev would beat down Stevenson in 6 rounds. They might as well get that one over and done with. I've never understood the Superman buzz.