The university offers are usually points, so no A* is not a problem. Also A levels have no A* currently either.
Think about your 20 points you can get for an A. It is safety for your A levels. If you got a B in your A2s and not an A as required. Then your A in FSMQ would boost your score to an A.
I would have thought you would apprechiate it in 2 years time.