Yeah, SM shouldn't have been involved with the Anime, in my opinion. They should have left it to Sega, and just focused on the toyline.
I bet the Japanese dub MIGHT be better and more consistent, though, since it's the original dub. (And SM probably didn't mess with it.) However, the subtitles in subbed versions aren't always accurate, and my knowledge of the Japanese language is pretty rusty, so unless I learn more Japanese reeeeeally fast, I can't say it DEFINATELY is better, so it's just a guess. XD