Gotta agree with Muke here, this is diddlying unfair. Games (or anything really) should not have favorites. Is SENA playing favorites? Hell yeah.
But they are advertising their content on Youtube! Cool, what about the dozens of other people who make videos of KHuX on Youtube? Do they get 6k Jewels? What about the hundreds of other people outside of Youtube who "promote" KHuX? Do they get 6k Jewels? No, I haven't heard of that happening. Seems unfair only giving 2 of them 6k Jewels.
Seriously, there are so many games out there and every game has people talking about it on Youtube, or outside of it, and this is the first time I've heard of the game giving those people a reward for "promoting" their content. Without officially being sponsored by the game of course.
And I don't think this a good idea in general. People make channels and talk about games because they like it, not because they expect a reward. But if SENA seriously is going to start giving people rewards for "promoting" their games, I bet there will be a lot of people who will try to take advantage of that. And instead of genuinely caring about the game and actually bringing good content to their followers, they are just there for the reward. That really changes the mood, and can really change a community. Because apparently people watch these guys for the community (which I honestly cannot understand, why watch someone play a game when you can play it yourself?)