Imo, the estimating of characters power levels is completely pointless given Nakaba moving away from it and that his scaling is absolute garbage.
Case in point being Meliodas being clocked at 142k and at that point of the manga was absolutely massive. Then we get the masters power levels and Ludos vessel power level. After that there was the performance of OG ludo, Sinner, and Mael. With that information, you basically have the Meliodas that fought Escanor in chap 232 at around 1/3 of his power in his prime. We did have that statment from Merlin about his darkness, but it didnt imply he was gaining power of that magnitude, complete bs. Also, would mean he was around 6 to 7 times more powerful when he pinned Zeldris and Estarossa and around 2-3 times more powerful than the masters. Hell, if Meliodas was that powerful where he's league above any other demon, then after his defection, you could argue the demon clan would have to surrender, especially since the masters weren't really participants at that point of the war.