Correction, Madara pants a goddamn rasengan to Kakashi, like a football that is all kinds of badass. Also theres more going on with Obito other than remembering his name, he's basically waking up(for lack of a better term) he had scarificed his identity and what makes him him and took on another man's personality, all this time he was a tool for Madara's ambitions(a parallel to Haku if you can remember) and he was now realizing himslef again. Although that doesn't mean I understand why he stabbed Madara(that scene reminded me of Gin stabbing Aizen).
Ok I'm defending Naruto a lot today, don't know why.
Kicking the rasengan should have been technically impossible since it pretty much explodes when you stop controling it.Also the Obito thing was simplified I agree,but Obito took on Madara's ambitions willingly and there was no real emotional connection between them beyond the fact Madara saved his life.