Can we really compare the PCE to TG cover art ex-post-facto?
We're talking the conceptual differences of two diverse cultures in a small entertainment/electronics segment of almost 20 years ago. Japan was the far off fantasy land that got all the hot electronic (and related items) years before we in the colonies did. There was no interenet, no fanboys, and a handful of resouces committed to video games. I wish I had a nickel for every time I heard: "In Japan, I heard they have this..."
Anime/Manga was(is) mainstream in Japan. Here in the states, no matter how much we love it, the best it Anime will ever achieve is cult status. Toonami is the best we can ever expect. So saying the casual American video game player won't appreciate an Anime cover is accurate, but that doesn't in any way discount the artistry of Anime or the intellegence of the US buyer. Amine was a great platform to base games off of in Japan, and games were a great platform to base Anime/Manga from.
Can any one fault NEC USA for electing to illustrate the cover are the way they did? Big eyes, big guns, giant open mouths, and machine gun jubblies was, um, well, foreign in the early 90's. I think the TG cover are opened up my imagination a bit more to the game. Of course I was an early impressionable teen then, but that was the target audience of the US videogame industry at the time.