I've come to the conclusion that you have zero comprehension of anything sales or marketing related.
In this particular case? It's hard to get the situation to be exactly analogous. It's one of the -- if not the -- first quality third party titles on the system. It's gotten positive reviews, and most people that have played it have loved it. I'm not sure Sony was in a position where they really had only a single quality third party game to trumpet, but I think if they had been, that horn would've been blaring our ears off.
But really, it's the fact that this game is such a marked difference in quality from the bulk of the shovelware that has infested this system from the moment it launched (and the fact that it was coming from a very key third party partner, in one of the only companies to announce several high profile, high quality original products) that should've been Nintendo's indication that it was a game worth supporting in order to ensure their partner's sucess and help Wii publishing remain viable in the future.
So you get it out there, you get people playing it, you help build awareness of it, because you've got a really high quality title on your hands. Not only that, but it's the sort of thing that genuinely can't be done on another machine and really helps prove the viability of the control scheme. That's definitely worth promoting.
Excuses, excuses. You think Treasure Island Z is a shitty name? I think Wii is even worse -- but somehow Nintendo managed to market the crap out of that, didn't they? The genre was never established on consoles? I'm not sure I buy that (adventure games have been popular on many consoles, handhelds, and PCs), but even if it's true, that just gives another demographic for Nintendo to supposedly reach out to and get to embrace their new console vision. Considering that point & click adventures were at one time shockingly popular and are one of the genres most heralded as potentially perfect for the controller, it's certainly incumbent upon Nintendo to help the genre succeed on their machine when it debuts with such a high quality outing.
And Nintendo deserves to be crucified for that.