I am not the biggest fan of WAR but when you say that Betts is the best player in baseball how will anyone else who does not see him play each day know this without one metric that compares all players on the same footing?
Betts' is leading most major stats in the game, true. But that is just what he is doing right now and leading all categories is freaky rare from what I have seen.
I agree that Betts is the best in baseball right now.