I prefer playing RPGs I can understand. That video is just two anime characters shouting at each other in Japanese (hardly impressive) and throwing around a bit of gore. They can't even match the mouth animations to the voices. Nothing in that video really has anything to do with the RPG genre, except that RPGs usually have anime cutscenes (which are a dime a dozen back in those days).
RPG dominance is not claimed... not by that video.
Although TMII doesn't have perfect voice syncing(like Kabukiden), that video's audio was way off.
That cinema was just the icing on the cake, since most of the TM/FEOE RPG's are great games in the first place.
What helps elevate them further, besides the great chartacter design, music, etc... is the fact that anime cutscenes actually
weren't a dime a dozen back then, outside of the PC Engine CD format(hence TM + PCE = RPG D).
And instead of just throwing in a bunch of short cinemas of girls eating rice cakes, TM/FEOE games actually use the cinemas to move the story and feature some pretty graphic stuff compared to most RPG's back in those days.
While I was playing Kabukiden, snerds were weaping because the water in Doma castle color cycled to purple.