I love a lot of things about Nintendo, but I gotta say, one thing I'm tired of is this line of propoganda they love to promote where they are the only "real" videogame company. Perhaps one could say they focus on ONLY videogames. But it harkens back to the days of old and Mad Yamauchi's ravings; the ego Nintendo always had about their self-image.
I would actually tend to agree that Sony isn't too much of a "real man's" game company. Sony seems too fixated on their eternal dream of getting a fucking net movie hub in everyone's living room, along with other "convergence" goals. They basically service gaming via a shotgun strategy that covers everything, but leaves lots of little holes.
With regards to Microsoft, it's funny, 'cause I was considering the other day that in my eyes the MS's effort with the 360 platform seems extremely hardcore in a lot of ways. I mean, there's been so much discussion over the aspects of the system and support structure - like Live 2.0 - that always appears to come back to: this thing is -hardcore-, and encourages hardcore-ness. A good deal of it seems tuned for the serious enthusiast gamer.
Nintendo seems to think that just because a product has extra functions, that lessens its gaming functions or indicates that the creator doesn't understand gaming or care about it.
Of course, one could see Nintendo as a very arrogant artise'. They believe their sensibility is superior and has more of the "essence" than other artists, and while this can lead them to falls, it also can give them the confidence and vision to go out there and try wild things that sometimes work out.