"Yeah, it seems that Japan makes these long trailers and then edits them down to the proper length for broadcast."
Why can't NOA do this.? Whenever Nintendo shows off a trailer at E3 everyone is all "Ooooo Ahhhhh" and then for the commercial they show like 1 second of really small and grainy footage and fill the rest of the time with dorks in costumes and/or some obscure Mr. Plow-like reference to the game that only about 0.0001% of the population can pick up on.
Here's an idea. The trailers create interest so use smaller versions of them for commercials. Not only does that make for a better ad it would be WAY cheaper to make. No need to hire any actors beyond a voiceover.