Tony hit most of the main points, but there's even more. Let's make the assumption that the two were in the same weight class, and somehow sparring one person from another style is enough to determine which style is better/make judgment calls about the styles. Neither are true assumptions, but would need to be in order to make this video work.
He still was the wrong choice for that. One of the first things Rokas says is that the guy has been training for over a year in BJJ. Around here, a year in BJJ from someone who came from another grappling background, is probably when that person would be getting there blue belt. Which is the rank that Rokas says he is.
So basically it becomes a video of two BJJ novices, one who's a master in Aikido and the other who's an intermediate in judo, are sparring in different formats, and that's supposed to say something about the differences between BJJ and Judo.
If that wasn't odd enough, I skipped forward a bit to one of the formats, and saw that in the instance where the judoka won, they decided his throw wasn't 'judo' enough (despite seeming to be a perfectly legal judo throw), and he needed to go at it from a more judo standpoint. Then he gets in trouble for giving his back because he is acting like he's going against another judoka, despite them acknowledging that this is something most judokas realize their first time sparring against someone in BJJ. Sob y the time most Judoka have reached that level they should have learned (I hope) how to adapt to people with a ground specialty, and learned to adapt, yet this guy is not allowed to adapt his game.
There really doesn't seem to be any actual information that can be gained from this, and if there was, it would be a comparison of Aikido and Judo combined with BJJ rather than BJJ vs judo.