I dunno about this. On the one hand it does seem a little shady, but on the other I don't think Ninja Theory would pull a review because it was a 7.5. They have a track record of making good games at this point (if not massive blockbusters in terms of sales). I dunno. They just don't strike me as the type to try and silence genuine criticism or reviews.
That all being said, I could be entirely wrong. Hopefully DmC is bad ass and floors people with its ostensible quality.