In Ninninger and Kamen Rider Prime Universes the foreign people and aliens speak several extraterrestial languages (aside of japanese and sometimes english too), but in the other Sentai/Rider/Metal Hero Worlds almost every character alien ally/villain speaks japanese, but some of them never visited Japan before, how we could explain that?.
A bit late, but here is my response: Super Sentai has a more comedic feel to it, mixing comedy with action and drama. It also depends on which season you watch, as some seasons focus more on drama like Jetman, while others are more lighthearted and casual, like ToQger. A RU-vidr named Marcosatsu could probably explain it better than I can though.
Takaharu is the WORST Red Sentaii ever. Hated him throughout the entire season. Yamato, on the other hand, is one of my favourite Red Sentaii. He's kind, he puts the needs of others before his, always uses his brain, and didn't make everything about him. Yes, it's a given, the entire plot was about his friends the Zyumans finding their way back home, almost reminding me a lot of Time Red of Time Ranger, Tatsuya, where the plot is about his friends going back hom. Tatsuya and Yamato have something in common, however; the plot may be about helping their friends get home, but in reality it is their world that is being destroyed. Even in those desolate times, they manage to keep their goals focused not steering away from helping their friends. Takaharu, is loud, obnoxious, hot headed, stupid and just plain annoying. He really have no good intentions for ANYTHING - just just wants to be fired up. There's a Yokai? Cool! I'm fired up! - is the worst leader approach.
