if a single site which uses an "out of 5" scale to rate their games gives it a 4/5 (80%) it would take 20 reviews at 100% to bring that average back up towards 99% just from a math point of view it would be very very difficult to achieve 99% meta with the way certain sites rate games.
On a side note though... this game looks fucking incredible, I can't wait for holiday season.... and Virtual Console.
Why not check me out on youtube and help me on the way to 2k subs over at www.youtube.com/stormcloudlive