You'd be very surprised! I've actually done blind tests many times in the past, I even posted about them here some time ago. KZ2 tended to rank poorly on the blind tests I did. I used to think that art direction was more important than technology, and doing blind tests makes me believe that all the more. In other words, I'd prefer great art with average tech instead of great tech with average art. Point being that "best graphics" is not cut and dry, and ultimately I think art direction trumps tech. So while on forums KZ2 gets brought up all the time as the best graphics, it's not surprising to me when I show it to someone and they think it's visually just average, or if they prefer MW2 visually. It's also not surprising to me when multi platform games get ranked best on blind tests.
Given that most games bought are multi platform, I'd say making a development platform multi platform friendly should be a top priority. The old strategy of putting out bizarre hardware with poor tools and support, and relying on years for devs to figure it all out is a dead strategy.