Last week, MLB Network's resident sabermetric/WAR fan-boy Brian Kenney described on his show how, so far this season, Bryce Harper is way down the list in WAR (I believe 80+ in MLB) but is like 5th in his cumulative wPA (win probability added). They discussed the fact that maybe 'clutch' really exists and Harper personifies it (at least in 2019). The problem with WAR is that (like overall run differential and its use in the Pythagorean win - loss prediction) some of those stats can be accumulated in 'garbage time' and skew the apparent value of the player.
Again, I don't discount WAR, but I prefer also to look beyond that one headline number.