The Admirals are always portrayed as a collective power, with no Admiral being above the other.
Basing your argument off of portrayal is completely useless and it holds less weight than a feather in a vs debating setting like we're in right now.
Claiming Issho is below the others is completely baseless and simply doesn't make sense
The burden of proof falls on you.
The reason we have Borsalino, Sakazuki, and Kuzan relieve to each other is because they were each individually called the Strongest in the Marines. How can 3 people each be the strongest? The only reason is if they're all equal/relative to each other.
Disregarding feats, If they did not have that statement, we would not have them relative to each other.
Because neither Aramaki nor Issho were stated to be the Strongest in the Marines, they can not be called equal to Borsalino, and especially not equal to Sakazuki or the Pre-Timeskip Admirals.
"His Kenbun scales to Doffy" Who called him and Aramaki monsters, and then got scared by his equal, Kuzan?
What does being scared of Kuzan and calling Aramaki a monster have to do anything with Haki scaling?
The accepted scale for Big Mom's Buso Haki is 6 layers and Katakuri scales to 7 layers despite Katakuri being scared of Big Mom and Big Mom clearly seeing him as far inferior to him.
We do not scale Haki based off of stuff like that. We only scale by feats, or specific haki statements.
Issho was blatantly holding back against Doffy, btw
And you think Doffy was going all out either?
I'm not trying to say Doffy = Issho, but you can't claim that their Kenbun don't scale to each other by saying one was holding back when the other was as well. We have nothing that proves that they were holding back their Kenbun.
In New World fights, Haki is the backbone. It's extremely rare that someone who has Haki doesn't use it.
Also, he stopped an attack from Zoro and stopped G2/G3 Luffy's Armament enhanced attacks. He definitely scales to those layers of Haki
That is not how Buso Haki scaling works.
Haki scaling comes from clashes. Haki clashes.
1. Blocking an attack ≠ Clashing
2. AP Clashing ≠ Haki Clashing
3. 1 person using haki while the other person is not ≠ Haki scaling