Nintendo has forgotten that if you want to selll your console you have to release it with great games and with Sony betting on a lacklasting series like Killzone and some other weak looking exclusives like this racing game driveclub, MS already won the next generation.
so imo Microsoft should name the new xbox - Xbox V, where V stands for Victory. casual also would think that it's a xbox 5 and its better than playstation 4 like samsung glaaxy 4 is better than galaxy 3.