If you're talking about the XP penalty from death, it's a percentage of the XP needed to advanced to the next level. The percentage varies by game, but I can try to dig that up.
My max xp is 137 when hitting someone at lvl 1650 my partner was 157 at same level, the difference is he is balanced where I am all stamina. and many people have believed there was a "penalty" for being out of balance. I knew this when I decided to build all stamina. I just would like to figure out how steep it goes and at what level I will max stamina and begin balancing out skills more
I dont think, that there is an XP penalty at fights for having to much stamina. At fights the XP depends on how close is the fight, the closer is the Health Lost to the Health Damage Dealt, the better the XP: Ex: +500,000 coins | +176 XP | +300 GP | -950 Health Lost | 989 Health Damage Dealt +500,000 coins | +162 XP | +300 GP | -911 Health Lost | 1,028 Health Damage Dealt +0 coins | +62 XP | +300 GP | -1,920 Health Lost | 10,080 Health Damage Dealt your Max Healt however looks like to have an impact, the bigger your Health and your targets, the better: +500,000 coins | +329 XP | -5,880 Health Lost | 6,120 Health Damage Dealt +500,000 coins | +342 XP | -6,000 Health Lost | 6,000 Health Damage Dealt You can try to balance your strength by changing your personal loadout and/or disabling your Slugger if you are to strong for a better XP.