FGS3 is superior to FGS5 when 4 handed for an obvious reason
But this is details. Being more risk averse than what that model suggests is good assuming that you perform better in future hands than villains do. This can go pretty far: If you know there are ppl who are happy to make -2% calls in the next hands, you're better off folding some hands that are no-brainer jams against 3 solid regs.