I used the Baseball Reference Play Index to find all the players who had 1,250+ PAs in both wins and losses from 2009-2018. There were 229 players.
The biggest differential (.402) belonged to Josh Donaldson who had a 1.051 OPS in wins and a .649 OPS in losses. The smallest belonged (.090) to Alejandro De Aza who had a .774 OPS in wins and a .684 OPS in losses.
The correlation between OPS in wins and losses was .72.
Click here to see the data in Excel.