Naruto scales to 10 Tails Obito, who scales above a previous version of himself, who scales above the 10 Tails itself, which has been calced to output about 45,000,000,000,000,000,000,000,000 joules of energy, the bare minimum of Multi-Continent level is 18,556,040,000,000,000,000,000,000, which is 2.4 times less. So Naruto is at best a few times above the bare minimum of Multi-Continent level, Psyrochi's High 6-A beam on the other hand is 110,000,000,000,000,000,000,000,000 joules, or rather, funnily enough, 2.4 times stronger than the 10 Tails attack, so almost exactly 5 times higher than the bare minimum of High 6-A. Saitama scales massively above that and is also significantly faster than Naruto's scaling. Saitama would very likely win with some difficulty