purely based on whatever you want to use as criteria to say one is better than the other. it is essentially your preference. maybe you think the other guy was a lot better or you just really hate one guy for whatever reason.
you can choose any wrestler in any wrestling company from ANY ERA and you don't have to say why you choose them over the other
Pick the winner against a new challenger!
So for eg.
goldberg vs. kofi kingston
kofi (his choice from the previous match up btw kofi and goldberg)
kofi vs. andre the giant
andre vs. finn balor
ETC. ETC. ETC.
so i'll start things off with
ryback VS. brock lesnar