I wish that he hadn't have gotten into a pissing contest with Dana and then had Bjorn kill pretty much any leverage he had in trying to get an offer out of the UFC just so that we could have seen what would have happened if he had fought better competition.
But going to One definitely worked out well for him. It may sound terrible but Chael always joked that he wanted to fight the weakest competition that he could for the most money possible. Ben put that into reality.
Fought in a promotion that paid him well, rewarded him with a couple high priced cars, and took hardly no damage while traveling the world and going undefeated in the process. I'd say Ole Ben did okay for himself.