Yeah, the judges say they based it on that one meal, but I have a feeling that, when the cameras weren't on them, they were saying things like, "There's no way we can let this loser take the whole prize!" Sounds like when Lisa was on her game, she could make some amazing food; but when she wasn't, it really sucked.
I've been to restaurants with chefs that are inconsistent like that. Almost manic. I'd have some of the best meals I've ever had on one visit, and the worst at others. After a few times, you don't go back...who wants to take a gamble when you're looking forward to a nice night out AND spending that kind of money?
Anyway, I'm glad Stephanie won, too. Poor Richard lost all confidence, it seemed.