Mario Kart 64 was fun, but only for a short while, the SNES and DS ones were far better. In the end, the issue was there was only so much you can do, then its the same tracks and repeating the lackluster singleplayer.
God Of War on the other hand was refreshing, it was great fun lasted longer and only had a few minor issues (only 3 bosses, Pandoras Temple was way too long).
That said, im going with GOW