NEC America's marketing is considered one of the major contributing factors to the poor success of the Turbo Grafx 16.
Lack of 3rd party support, Not understanding the American market of the time, and of course Nintendo's stranglehold on developers didn't help....
When NEC gave up and passed the torch to TTI, it was probably lack of funding that kept the advertising low and accelerated the other issues. It was during that time that TTI came up with this, perhaps the worst Advertisement ever.... July 1992 issue of EGM (possibly others). Not the most desirable comparison here. If you know of other super bad (as in really really bad) turbo ads, post em here.