Why not both?
By the way, there are lots of Japanese RPGS still unstranslated for the NES. Nevertheless, whether they're good games or mostly crap, that's a different matter. "Otaku no Seiza" comes to mind, I don't know much about that one, but it seems some people are looking forward to it. Also for the NES, there's the "Momotarou Densetsu" series, the "Little Ninja Brothers" series in which only the first game was officially translated if I remember clearly, or the "Ganbare Goemon Gaiden" RPGS.
I still want to look at Momo-Gaiden.
As to Little Ninja Bros.: there were three games each on NES, GB and SNES. Though the first NES/GB game was not an RPG.
Super Chinese series for Famicom: we got 1 (Kung-Fu Heroes) and 2 (Little Ninja Bros.). Didn't get 3.
Super Chinese Land for Game Boy: we got 1 and 2 (Ninja Boy 1 and 2). Didn't get 3. There was also 3'. But I don't know the difference. I think 3' was also only released on a multicart with the full trilogy but I'm not sure.
Super Chinese World for Super Famicom: we got 1 (Super Ninja Boy, though it seems to have been altered a bit). Did not got 2 or 3. It seems 2 was at one point planned for localization as Galactic Defender (though EGM had also previewed one of the Culture Brain fighting games under that title. I forget at the moment if it was Super Chinese Fighter or SD Hiryuu no Ken) I took a bit of a look at SCW3. It is probably going to be **** to translate.