I'm a little biased when it comes to Hack Wilson.

Anecdotally, I've had decent success, though not sure how to calculate his overall WAR value in a given season, which might answer your question more precisely. On this $140M team --
https://365.strat-o-matic.com/team/sim/1786820 -- I had Hack in CF and Kiner in LF and Sosa in RF, still won 86 games and the championship.
Wilsom had a .989 fielding average, made 5 errors and was 65 for 84 in X rolls. Overall -- and I believe defense is a team concept – this team had a .980 fielding average, 636 for 905 on X rolls (not so good). Arky Vaughan was the SS. It was an offensive juggernaut, scoring 1,128 runs.
So, my simple answer is that with Hack (or Kiner playing left field), your overall team needs to score a lot of runs.