Yes I know. I joined a training for game tester in a dev before.
As game tester we must use cheat (fake items with huge stats are available) to test the bug in game. And we must delete cheat feature before the game released. In ver. 1.0.0 Also game tester shouldn't play that game "online".
So:
If someone could link a fake item, maybe he use code hex.
If someone could wear a fake item, maybe he is a game tester.
If someone (normal player) could wear a fake item in ver 5.10.1, maybe the money rules the game.
5-10% stun is normal, 50% ? Can you beat him?