I think bigger system=better system idea may originate solely with one Ken Wirt. "There was a feeling"....wtf? Is it something the Japanese thought by some chance? And if bigger=better, why did they stick with hucards?
I'm sure that they ran a "focus group" ... his sort always do.
But it's about how you prepare that focus group and market your product.
Say, like providing a picture of one tiny 1MB HuCard next to a stack of 8 128KB NES cartridges, and saying that "Through the Power of Technology, we can fit all of those old out-of-date games into this one sleek package." or some similar marketing BS.
Put an R-Type Arcade Machine in a car-crusher, and make it appear to strain and have difficulty crushing it down to size, and then show a PC Engine coming out at the end ... and show the game, which just looks far-better than any other version.
It's not rocket-science, it's just being competent at your job.
If they'd not messed around with that stupid redesign, that could have had a year's head-start on the MegaDrive, and be showing R-Type to people instead of Sega's Altered Beast.
We've been through this all before. NEC USA were just not even remotely competent.