I think that max effort is another thing that should come into play when talking about the most difficult sports. Max effort is part of my golf game and not typically for the pros, but I’m often three fairways to the right… There’s not a lot of max effort in boxing, I’m not sure about wrestling (it’s probably there, but only visible to those that understand the sport).
Baseball has a great blend of technique and max effort, and you can still have a conversation about anything while at the game…
As a HS shot putter, I once threw a 12 lb. shot between Brian Oldfield and Al Feuerbach (both former world record holders) tossing a 16 lb. shot. I’m not sure there’s a more pinpoint focused max effort moment than a world-class shot-put throw.