Nah. The Admirals are a monstrous fighting unit. They won't high diff each other let alone mid diffing imo. They should be close in strength overall.
You could argue that Kuzan's ice was a bad match against Akainu's magma but he still managed to push him to extreme diff. And besides, Aramaki should have strong enough CoA to imbue it into his plants so they won't get burned by Akainu as easily.
Yeah mid diff is too low for now , even for Akainu vs GB - which i believe is the match of strongest Admiral vs weakest Admiral .
That's why for now at least , Akainu vs GB is a high diff .
Yeah maybe
in a clash , Kuzan's ice is in disadvantage vs Akainu's magma in the same quantity .
The iceberg Jozu threw was instantly vaporized by Akainu's Daifunka .
But let's say if Aokiji and Akainu were to fight again right now , i don't think Kuzan will try to clash his ice vs Akainu's magma .
Kuzan will just try to freeze Akainu's magma :
He instantly froze the sea water between 4 Long Ring Long Land islands
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https://mangasee123.com/read-online/One-Piece-chapter-319-page-9.html
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https://mangasee123.com/read-online/One-Piece-chapter-319-page-12.html
And ofc he also instantly froze WB's tsunamis
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https://mangasee123.com/read-online/One-Piece-chapter-553-page-4.html
So maybe he can freeze Akainu's magma as well - but it'll be harder than freezing water since magma is semi liquid and it's really hot unlike water .
Also he can possibly freeze Magellan's poison as well .