I'm listening to your youtube post, the only really "japanese" sounding thing I hear is the third track, and that's only because it sounds like yasunori mitsuda composed it lol. I generally think that harmonically speaking, anything based around a minor i-VI-VII-i progression has been stereotyped as a japanese sound... which is stupid because I absolutely love that. Oh, fifth song in has a japanese sound to it, i guess. But it's not even that bad! I guess I can hear what they're talking about, but for that to be a COMPLAINT is silly, I think. I mean, it's clear that you've been heavily influenced by, well, japanese video game composers. But, who on this site hasn't? Who in the industry (other than howard drossin...) hasn't? If you really wanna chance your style for this silly reason, just imagine everything you ever liked about yasunori mitsuda or nobou uematsu and try to remove that from the element.
Sometimes I think that the idea of something sounding too japanese is them saying "hey, this music is too good, could you dumb it down a little? Take out some of the really nice sounding elements and replace it with more generic sounds?"