Its likely a marketing thing. The Clone Wars appeals to all the 13 year old because thats always been LFL's biggest market, and right now they are all about Jedi battles, lightsaber fighting styles, Clone Wars, Anakin and Obi Wan, General Grievous and other PT stuff. The prime demographic right now is all about the PT. Thats why everything in the Star Wars Insider is entirely PT based.

But you know this kind of ascillary stuff has always been dumb, it just never tied directly into the films they way this one does. I mean The Ewok Adventure, hello?? If there was an internet in 1985 we'd probably be having this exact same conversation. At a certain point you have to just pick and choose which SW stuff you like, its just unfortunate that the amount of garbage has grown so big lately.