That's not the usual, eager fanboy drivel we're used to. Tartakovsky doesn't even call him "George". He refers to "he" instead. Wow. You'd never catch a fanboy doing that.
Well, Tartakovsky took a lot from SW to make his shows Dexter's Lab, Powerpuff Girls, and Samurai Jack. And I completely understand if Lucas would feel threatened by Tartakovsky's style of direction, sequence, timing, and placement of events. I'm not defending Lucas in any way here, but stating his fear of producing quality and having someone else beat him at his own game.
Filoni couldn't do it because he's a yes-man. He also couldn't do it because of his lack of knowledge in actually directing. Lastly, he wasn't focused on the job to make it SW he wanted to mess it up. Lucas liked it and for (I'm betting) the main reason is that CW didn't outdo anything he's thought up.
Tartakovsky uses strong PT elements in all of his shows and because of this, all of his shows work really well. With Samurai Jack, sure there are a few episodes that I don't favor so much, but they are still good episodes none the less. Lucas is afraid of Tartakovsky outdoing him severely with SW. Tartakovsky I believe actually crapped on the PT, but in a possitive way. How? By using a style that can get a message/battle and subject material in a fluid motion. Much like the PT. Tartakovsky studied the PT a lot, and now, that is his directing style, along with bits of Ridley Scott, and throw a bit of James Cameron in there too.