I have no issue saying McDavid is the best player I’ve ever seen by quite a margin.
I never saw Gretzky dominate the 80s (I'm 85 born). But Lemieux was my idol growing up. And the 2nd best player to ever lace up the skates.
And yet I'm not going to completely disagree with you either. It's just wild what he's doing in an age of the game that it shouldn't be possible to dominate like he does.
I don't doubt that someday we could see a freak of nature athlete emerge some day that's 6'7 and 250lbs of lean muscle that can skate faster than everyone, hit harder and be impossible to stop or take the puck away from - and have the superstar talent and IQ to back it up. And that player could dominate in a way that other superstars can't, and would be the clear cut best player of his generation.
But that's not McDavid at all....you could pass him in the mall and not even notice him if he was wearing a mask. Just a regular well built but normal looking lanky dude. Like that carpenter you contracted to do your kitchen last year or something....
Yes his skating is a God given athletic ability, but otherwise he's not a supreme athletic specimen. He's in top shape no doubt, but he's a lot closer to being shaped like Gretzky than he is like Lemieux. But alas, the dude is a freak on the ice with the puck on his stick.
So yes there is no other top player in any of the other 4 major sports that is just so clearly far ahead in a tier of his own. We don't even know who's 2nd best in hockey, is up for debate. But no matter who you pick that player has a canyon to cross before he gets to McDavids level.