I'm not sure what to make of this thread. Is this a joke thread?
I mean, isn't it obvious that some great games don't sell well, and some mediocre games sell really well? Beyond Good & Evil sold 500,000 copies, and Mario Kart Wii sold 32 million more than that.
And just because the critics polled at Metacritic gave a game an aggregate score of 90 doesn't mean YOU will think it's a 90.
So 1) a game high in quality is not guaranteed to sell well, and 2) critical consensus is not always a good indicator of popular appeal. But we all already knew that.