No they aren't, the OP community seems to think characters who have short skirmishes with Admirals should be put on some level far above the SNs, creating a seemingly even bigger gap between them and Admirals.
All those clashes they had with admirals are faulty, Fujitora wanted to be held back by Sabo , Marco kicked Kizaru and did no damage. Jozus best feat is hitting a distracted Aokiji who was fighting the WSM. Vista didn't even get an upper hand on Mihawk who wasn't taking the fight all that serious.
It took Marco + Vista to actually harm Akainu and even still the attack did minimum damage, and this is after there comrade was magma fisted through the chest, their Haki should have been stronger than ever.
Sabo had bruises even though Fuji wanted to be held back, Jozu was one shotted as soon as he got distracted.
You can't seriously sit here and tell me if G4 was in any of these situations he would look worse, a KKG would definitely give a distracted Aokiji more than a nose bleed, Marcos kicks are no where near as devastating as G4 attacks have been portrayed to be, G4 nearly tore a whole town In two. Luffy was dodging attacks from a non serious Mihawk pre skip, no reason he couldn't do the same now.
I'm not saying that the SN can give an Admiral a tough fight but there not fodder stomping them like they could pre skip.
And there was no reason for the WB commanders or Sabo to hold back they had family they wanted to protect. The Admirals couldn't be pushed by those guys to go all out.
If the WB commanders and Sabo are really stronger than Luffy, the gap is small at best.