Very interesting and unusually intelligent thread. I too don't have a heckuva lot to add. I suppose I'm a "victim" of this lovemark thing, as I certainly recognize it, though I never knew of a decent enough buzzword for it. Still, I am and always was a multiconsole gamer (except briefly when I was living overseas, but I've made up for that this gen, in more ways than one), but I've always preferred Nintendo as well. Indeed, you could say I even started with them. I owned a Commodore in my youth, dabbled with arcades, and Ataris, and Intellivisions, but it was my NES that really began my passion.
That said, I do NOT think that this "lovemark" thing Nintendo has going is a sign of a very sophisticated and cutting edge marketing philosophy. I think it much more likely that it is more of an accidental result of the timing and positioning of the NES and SNES, than anything else. Though, of course, their unusually brilliant track record over the past 20 years has much to do with it as well.
I think dog$ is way off base trying to compare the kind of interest and loyalty that Nintendo can promote (even through nonsense announcements) with much tinier cult followings of select games, franchises, or companies.