Well if it is a disaster like XIV was then it may tank the Final Fantasy brand but NOT the company. Square Enix would survive it. But if it is a disappointment I still believe that it will be a huge commercial success.

Versus XIII could be a very good game and still be a disappointment! The expectations are high. So my prediction is that it will be the best thing since buttered bread or a bit of a disappointment. If it is a disappointment it will still be a "must-have" game but fans will bitch. People will still buy it anyway because...surprisingly...attitudes are not a strong predictor of behavior. It doesn't matter what people say on the internet.