Luffy couldn't even beat a mentally held back Kizaru, he literally needed to be fed. What are y'all on?
Now obv with narrative Akainu has to be stronger than BM, even with feats we can justify this.
WB is stated to be the strongest pirate
And we know BM was alr a yonko at this time
So Old WB > BM
And Akainu was doing a lot of damage to WB while he was still an admiral
So even Admiral Akainu > BM, and obv 2 years later, Akainu'll have gotten stronger so Akainu > Law & Kid and Kizaru > Luffy, so the Marines win