If the value is the same at either position, why does it matter which one he plays? In this scenario the Cubs have a 3.6 fWAR player in LF already and a big nothing at 1B. If Soto is going to put up 5.5 fWAR at either LF or 1B, I really don't see what difference it makes. This isn't a Cody Bellinger situation where Bellinger derives a lot of of his value from his defense at a premium position so moving him to 1B would like cost him a few wins.