PewDiePie.

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They both have a range of channels, suggesting they just want more money than they're already getting. In other words; greed. Greed is a selfish desire for something, like discussed in the video, they play the same game; over, over and over again. Squeezing out all the money they can. The faces PewDiePie pulls, so people screenshot it, and tell their friends how funny he is. Perhaps make a meme out of it, all gives him more publicity = more money. Notice a pattern? His motivation is money, their is no balance. Sips creates that balance.

Apart from the multiple channels, which is a clear money making scheme, the rest seems to be a product of his fanbase. He pulls those faces because that is PewDiePie. You may find it stupid and not funny, heck so do I, but people are willing to watch it and share it - I can't really see that being his fault. As with anything, money is always going to be the main motivation and I highly suspect the same will occur to Sips one day.

He has a series called 'An Evening with Sips,' where he plays a game, if people want to see more of it, they comment. He responds by turning that episode of a game into a series. He also talks about what people are commenting in his video's, if people are telling him he's missed something, he goes back to look for it. He also responds back in the comments himself.

You wouldn't find BlueXephos, PewDiePie, or Tobuscus doing that.

That sounds pretty swell, but I don't see this sort of thing lasting. A lot of YouTubers change when they become more famous and thus gain more money. You also have to realise that a lot of these, arguably bigger, YouTubers can't afford to respond too regularly in comments because of the sheer amount of time it would take.

I'm not defending these guys, but I don't really see anything against them either. They make videos that people are wiling to watch and make money from it.