But a part of the reason a studio green lights a major budget is because they expect it to bring back major returns. I don't consider small movies flops just because they don't make a ton of money. The goal would be to bring back more than you spent. And for larger movie budgets, I'd think you are at least aiming for something in the ballpark of expectations. Even the people who were not excited for that film thought it'd easily hit a billion (me included). To piggy back on erasure, I wouldn't say that makes it a bad film (though definitely not one I cared to see), but I don't think a flop and bad movie are synonyms.
I mean, not a perfect analogy, but if I went to a casino with $100k and went home with $70k, I'd be a lot more bummed than if I walked in with $100 and walked out with $200, even though I'm leaving with a lot more in the first scenario.