His response to the call feels a bit like Michael Scott in the episode Casino Night. "I went all in, you should fold, I have good cards". Ok, that's why you play the hand. If all the responses are going to be dictated on rails, then why bother. Deal the cards and let the computers sort it out.
And it's not like it was guaranteed that he wouldn't hit either his straight or flush. I know the cards have RFID in them, I don't know if they're sensitive enough to tell the exact order of a stack of cards. Because that's what she would have had to know, his cards, and the next cards in the deck in order.