The sheer amount of people who believe this baffle me, MBA isn't a massive buff and has terrible on screen feats. He got perception blitzed by the same Sukuna and killed by the same Dismantles pre awakened Yuji could react to/tank. Then you're factoring in awakening which greatly buffs his stats, and somehow think Kashimo is some kind of speed demon who oneshots?
For those who don't think Awakened Yuji got a big stat buff, we see in Culling games Yuji went from being blitz oneshot by basic kick to tanking a roundhouse to the Jaw. Sukuna attributes this stat buff to "Kenjaku does the grossest things" all while Yuji had the swirly eyes he had when he awakened, They just didn't stick around. Yuji after awakening kept up with a Sukuna who just landed 5BF that boost his output and made him strong enough to no diff maki without fine.
Not only does he severely outstat, he can kill him with a touch, and domain diffs. This is not remotely a close fight. "But sound/em waves" The same ones half dead meguna tanked easily who is far weaker than healthy Heien. "But lightning" The same ones he needs to charge in close range, he'll die immediately.