No my interpretation is his feat on the roof is consistent with his portrayal and feats throughout onigashima. The outlier is Izo, and it's an ok outlier given Izo went kamikaze. When you are going kamikaze it is not reflective of your lvl under normal conditions.
The rooftop feat is just his top end feat, just like characters have casual showings and then their final max showings. What he did on the roof was his top speed and top strength feat. His entire onigashima run aligns with it too. He bodied someone like Drake in a numbers disadvantage, Apoo tried fighting and even in a 4v2 felt he didn't stand a chance. This is nothing short of top commander (Calamity, SC etc.) lvl portrayal.
The cherry ontop was him remaining conscious after an attack several magnitudes stronger than an attack that knocked out Kuri Luffy, and above what knocked out the scabbards on the roof, after he had already taken mortal damage beforehand.