Overpowered? With as many Ls and given victories he had?
That's not a really good way of looking at it. Whitebeard in One Piece is literally the strongest character in the entire show by several magnitudes, yet he lost the one battle he was shown to be in.
The point is that Sasuke is overpowered relative to his position in the series, which was supposed to be Naruto's rival. Apparently, all Naruto did in his training with Jiraiya is look at his porn, because when he got back, he needed a couple more training arcs to even get close to Sasuke's level. Meanwhile, right out of the gate, Sasuke was taking down Kage-level after Kage-level opponent between Orochimaru, Deidara, and Itachi, to the point where him crashing the Kage Summit was not only taken seriously, he made some progress in it, which is the point where the power levels reached critical mass bullshit and triggered an explosion that covered the entire narrative with metaphorical cow turds.
If 5 of literal best ninja's that the most powerful countries that the Naruto world has produced aren't capable of squishing a 15 year old kid the moment he shows up, that 15 year old is over powered for what his place in the storyline ought to be.
Again all you really need to do is look at how he was depicted in Part 1 of Naruto. He was strong, sure, had that fancy Uchiha eye and fire techniques and was clever and all that, but he never overreached himself. He was still a genin, still a kid, still had to work hard to struggle against just moderately strong opponents, and had no chance at all against the truly big names. There is a stark difference between that and "Look at me somehow beating thousands of shinobi without a sweat while still keeping them alive, lol"
Granted, in contrast to Sasuke's ridiculous rise, Naruto's was way too slow. I don't know who I'd say had a believable growth in power...maybe Shikamaru.
but seriously, is this just gonna be the Naruto thread until MHA comes back?