It's actually more about the cost of the cards than QP's (oh, and mark). As mentioned, I've run some games against tttt's deck just now (not that I needed it), but even with AI fail play, it beats ours 9-1 at 36 cards. Not even at 30. I calculated a 50% chance you would bring an expensive QP-heavy deck against us, and it paid off. But since you had 4 matchups, it could've easily been 25%.
(edited, btw. I meant to say you've lost the deck, not lost -with-)