I don't think I am being naive, but I guess I am exaggerating how good Dishonored could be.
To bring the comparison down to the most cut and dry metric: Metacritic. (I know its stupid, pointless, and whatever other adjectives you want to throw around, but it does serve its purpose as a simple review aggregation site and, apart from the sites that don't use a numeric score (1up specifically) is a decent way to tally reactions)
If Dishonored is an amazing game that is reviewed fantastically well, lets say it gets a 90 or higher on Metacritic, I think it will sell very well.
I don't see any games on Metacritic with above a 90 that, as far as I know, sold lower than what they "should have" (the size of their niche market, plus the people that will hop onto a particular game if they see it is reviewed well). If you can point out a flop that was reviewed above a 90, hell, an 85 point it out.
On the contrary, if you look at abysmally low Metaciritc scores, very, very few of those games sell at all, except to the uninformed consumer. If Steel Batallion had a huge marketing budget, based on all the negative reviews of the game, I still don't think it would have sold well.
Another example: Red Faction: Armageddon. Guerrilla was very well received and sold, as far as I can tell, very well. There was a lot of hype for the sequel, but it got poor reviews and sold poorly. That game could not have gone into a better market, but it was, according to most critics, a bad game.
That was the only point I was making. Very well reviewed games get much better sales than very poorly reviewed games.