You don't seem to understand of what Chthu said, you have no right to complain. You're an extreme whale on this game. Grateful yes, but also ungrateful as you have the balls to complain after spending so much money to out scale all of your surounding players. You have a 100% winrate, only because of your hunderd of bucks you spend on pachinko, to only gain a full set of mono legendary gear, or close to it.
Regardless you can still lose arena contests, even if you don't use kobans. You don't know other players, they are pretty ballsy often. You simply comming to complain on this topic is just a sick joke of you bragging to f2p players, or at least against people that don't spend as much.