No show stealing? Don't make me laugh. Naruto stole that match against Obito. Why you think people called it Obito vs. Naruto (and friends). Naruto was too useful for that fight that Sasuke need a buddy to finally become useful. Sasuke was like, "Wow, everything that I thought I could do better, I can't do it." It went from "Well, he has sage mode. That's...nothing" to "What the hell? He can escape to the other side of the barrier with just his chakra!?" to "WTF! He can be in Bijuu mode and Sage mode at the same time!!!" Why you think he got pissed. Honestly, his happy days being better than Naruto ended in Sasuke and Sai arc. Everything else he has made bad choices and received a bad ending to his life, such as killing Itachi only make him look like the biggest fool in that battle. The buildup of Sasuke doing Chuunin Exam hate on Naruto again started when Zetsu reported that Naruto defeated Pain, which is said it's not possible, not because of just power but even manage to save the village. Lucky for Naruto, Sasuke didn't care at the time. Then, the rise begins in 616 and Orochimaru knows deep inside Sasuke was hating hard to the point his own team was rubbing in by saying it's great and such.
Do you honestly think he's going to outshine here the most? Please, why you think we know Sasuke's power the most now? To me, we're going to see more on Naruto, especially his power remains a mystery as well as all Bijuu's chakra specialty has not yet been displayed. Hell, maybe I would believe it if Madara was still around because to be honest, I once said, "Madara is for Sasuke" but nope, he's gone, and now we have Kaguya, who is not exclusive to Sasuke, so there you go. Not to mention, Hagoromo has acknowledged that Naruto is the chosen one, which btw Sasuke didn't hear that. He hates to have Naruto the special one. Why you think he was happy that he's only special because of Kyuubi. With that said, Naruto has not yet "play around Bijuus" so in due time, we about to see something. I can go on, but you get my point. This is why I never joined the bandwagon of "favoritism." Please. Maybe if Sasuke was alone, sure, maybe, but being on Naruto's side, yeah, don't let your ego hit you on the way home.