What do you mean by "generic"?
Apt for a wide range of subjects, in contrast to a film that, let's say, would be finetuned to skin tones?
Precisely. Skin tones and granularity may be nicer with Kodak's Portra, but Superia does extremely well with difficult lighting (partially light, partially shade), and I love its reproduction of natural green tones. In my opinion there is no such thing as "a best film", and in today's market there also exists no "bad color film". They all come with different characteristics and color palettes and we should choose them accordingly.
Trying to be the best of whatever I am, even if what I am is no good.