yes, but lets see an example ...
... coming from a real sport (being Top 5 of the world) I often hear "but there is a better player" said to a World Champion (!).
So, YES MAYBE somewhere in Afrika or on Tristan da Cunha there is a better player, BUT if she/he do not take part of the World Championships, she/he will NEVER be a World Champion !
You understand ?
A 1 time World Champion can really be stronger then a 17 time World Champion, BUT that doesnt change that the other won 17 (!!!) times the World Championships !
So under the line, its better to be 17 times World Champion, then 1 time, even the one with 1 win would be a little bit "better".
It's not the fault from the 17 times World Champion that the other didn'd TRIED 16 times more !