Ten years of filler has all leading up to an epic battle between Naruto and Sasuke. This isn’t that battle.
“The Last Episode of Naruto” is a parody by the Animation Domination High-Def YouTube channel.
Most of it is just the characters saying each other’s names back and forth followed by the equally cliche powering up. Naruto summons the Nine-Tailed Fox Kurama and Sasuke summons Susanoo. Then they start summoning characters from other anime series: Eva-01 from Evangelion and Colossal Titan from Attack on Titan. They run wildly towards each other but just as they meet, Naruto and Sasuke kiss and make up, literally!
Essentially the same thing happens in the final episode of Naruto SD, which is an official parody of the entire series.