I like Sabo and all but just like Marco, I think hes overrated asf as far as power goes. If you look at Sabo vs Fuji without favoritism then he never really did anything in that fight to suggest he was on some whole new level compared to Doflamingo or G4 Luffy.
An injured Luffy bruised Fuji with his most basic G3 attack despite the Admiral blocking against the attack. So why is Sabo viewed as stronger when he never even scratched Fuji? And even if he did and I'm just forgetting, how would that make Sabo stronger when Luffy never had to go all out either?
Some people even like to say Sabo is stronger due to not being blown away by fierce tiger but people seem to forget that luffy was within close range of the attack where as Sabo was much farther away and even still he was almost knocked in his ass. People also like to use Sabo being #2 of the revos as a reason but people seem to forget that Sabo still has a lot if growing to do and the revos still aren't ready to take down the WG, so nothing wrong with him not being Admiral level right now.
Sabo is Doflamingo level at best.