VoTe Battle : Naruto could have summoned bunta to solo sasuke neg diff or go 4 tails mode and wreck him, plot prevented it.
Part 2 beginning shippuden fight : Naruto wasn't even trying to fight back
Kage summit battle : Naruto could have entered Sage mode and wrecked sasuke, plot prevented.
Current Battle : Naruto is holding back, even with Sasuke's new susano'o i don't think he needs to get serious.
Even with Lee's speed, Sasuke still had to enter CM to fight against Naruto, in the VoTe battle, Sasuke entered CM before naruto entered 1 tail.
Plus, Naruto defeated Neji whom was said to be stronger than lee.
More like Kishi doesn't allow him to solo sauce because he likes to fap to sauce aswell. Kinda sad that he made Naruto the main antagonist and yet he made Naruto lose to someone who he could've killed neg diff.
So, for one in a battle of fate between two best friends, you honestly think Naruto would even THINK to summon Gamabunta? Or that Bunta would even comply with Naruto at that point to attack another kid? ... Good luck on that fanfic.
That battle, Sasuke GREW leagues above Naruto at that point, & I'll give it to Naruto, he was too shellshocked to even react. His infatuation literally would've gotten him killed. That's no one's fault but his own, Orochimaru allowed that story to continue otherwise, yeah, Team 7 would've gotten hit by Kirin.
Sooooo, you're crediting Sasuke a lot here.. It takes SM Naruto to defeat a blind Sasuke?
Sasuke entered CM mode to show Naruto that he was serious about his quest for power, Sasuke throughout the entire first half of that battle literally destroyed Naruto, if Sasuke stayed on his resolve to kill him like he could've with that Chidori before Kurama's Chakra took over, he'd already be dead.
In most scenarios, before Naruto uses these God level techniques, he already should be dead beforehand.
Edit: Currently, Naruto and Sasuke both aren't pushing their limits.... Naruto's being forced to accumulate more Nature Energy than normal, & Sasuke's siphoning the Bijuu's power... Pretty even turnout at this moment.