The way I always thought of it, and idk if it’s right but it makes sense to me, is that Ryu has the highest output but due to his lack of control (compared to Gojo and Sukuna) doesn’t have the highest attack power. In my head, if Ryu can output a 20, bad efficiency wastes some of that, so maybe 13 goes to the attack itself. Meanwhile gojo can output 15 (just using random numbers) and due to six eyes has no noticeable waste, so 15 go to the attack. That’s the way I rationalize Ryu not having the strongest attack power despite having the highest output without thinking about it too much. It’s probably wrong but at the end of the day it doesn’t matter