There are a couple more differences, for instance VII is probably the West's favorite FF. FFX is Japan's favorite and while the West liked FFX it's not the juggernaut over here like it is in Japan, there are reasons it got the first game sequel.

Also FFII is a fan favorite in Japan due to some of the game's silly dialogue and Mateus is usually considered to be one of the top villains in Japan. Dissidia has raised Mateus' stock in the West as well.

FFIII and FFV are also highly regarded and generally fall just behind X, XIII, and VII, whereas the games are sort of just in the middle and thought of as indifferent in the West (largely because they were released so late out here).

VI has a cult following... in America it's not so special worldwide due to similar issues as FFIII and V for PAL regions and the Japanese felt the game was decent. My theory is that it was due to how many radical changes VI made in comparison to previous entries and the Japanese didn't take it too well because they were expecting a shiner version of FFV, simialr to what happened to VIII and XII over here. With that said, Dissidia seems to have made Kefka a more popular figure in Japan.

IV is actually highly regarded in America as well, it's the Europeans who don't understand what the Japanese and Yankees see in it but then again they only got Mystic Quest before finally getting VII.

XII actually did better in the West than it did in Japan in both sales and reception. While it was not received as well as FFX over here, it was generally well received compared to XIII initially. History has largely vindicated XII in the last eight years among the Western fanbase.

We don't get Lightning's appeal out here. It's not that Westerners hate her but it seems to me we don't really understand why she's such a break out character in Japan. Likewise, Sahz is kind of her parallel as he doesn't rank very highly in Japan (hence why he rarely shows up in the XIII sequels) whereas he's a largely well respected character in the West.

Japan seems to actually like Vaan and Penelo, the West hate them. Both sides like Balthier. Tidus is another character that's divisive, he's generally well loved in Japan for his sunny disposition, he's a divisive figure in the West, same with Yuna.

Both sides like VIII, though not as much as FFVII, but both sides seem neutral to IX. Outside of Vivi and Zidane popping up in other media occasionally, it just seems to me that neither side gives this game any attention.