If you go back the past 17 years looking at every major fight where plenty of action is taken, I'm sure everyone would be amazed at how much they would be up if they played the dogs. (mostly heavyweights, but big nights like tonight would count). Not including the Buster Douglass knockout.
btw, I don't know the numbers, but working on memory (since Leonard vs. Hearns in 1986) I'm fairly confident the number of units up would be huge.