The only guy off the top of my head who's record(from what I've read) seems to be so far above his competition is Gretsky.
Throw in long boat journeys(around 6 weeks) to play in England etc where it would surely be hard to stay at your best all the time his record IMO is even better.
In MotoGP terms I guess it's be like 11-12 premier class championships with 160ish wins over all classes? Though the sports are so different concerning equipment being a level playing field it's a kind of .... comparison.
Pele?