The second part is the problem - if Pixar releases a movie that is good, more than recoups costs, and otherwise is a fine addition to Dreamworks lineup, it could still be considered a complete flop by most everyone.

E.g., "The Good Dinosaur" which (apparently) eventually made enough that it was "worthwhile" - didn't break any records and didn't really make money, so it's a flop (Onward even more so).

It's complicated even more by a movie being able to be a flop, cult classic, and widely loved at the same time.