Fighting Spirit Game pass

This is a game pass in one punch man : destiny in Roblox( I am sure all of you all knew that), it gives you the following...feature or should I call this traits?(please edit this...). this is the feature/ trait: deal more damage the lower your health is (up to 2x damage at 10% health). Alas, the feature does not work on players. Which means if you and your pro friend battles, your damage wont go up throughout the battle and feel like you are rising but finally still died. So if you want to buy the game pass and not bothering about the fact that it does not work in PVP.