I lost 1300 gold to him and I'm not terrible at Blackjack, but it's literally 21 everytime from him
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Ah, the restaurant guy. There's no difference between him and Johan in the lounge except for the bet amount. I just checked his logic. So, getting several wins with a perfect 21 is either really bad luck or some changes to the game. By statistics, it's highly unlikely to happen in a prolonged time period.