Like I said from the beginning, Yumi shouldn't play so that she only touches the card slightly, giving the other player the impression they got the card first. And even if that happens occasionally, she shouldn't every time start an argument over it, like she apparently did before becoming the queen and now is doing again. If two people roughly equally good play a game like this, they should statistically lose such cards in an equal proportion - unless one of them acts like bitch and contends it every time. If there's much skill difference, situations like that won't even happen in significant numbers. However, like I said before, I have zero doubt Yumi would forcefully make herself "equal" even with a better opponent by contending every fricking card. She wouldn't have a notorious fame like that otherwise.

Keep Chihaya out of this. She yields cards like there's no tomorrow, even if the opponent does nothing but cough. You can hardly claim she would, with a loser attitude like that, purposefully try to rob cards if she noticed she was the second to touch them.

What comes to your confusion, note I used the word "or", not "and".