Here’s why Askin doesn’t scale to Kisuke in the manga anyway.
Askin straight up states that Kisuke’s physicals are nerfed in the gift ball deluxe. Kisuke even agrees with that notion, he says despite being in his Bankai state he isn’t at full physical capacity. We see this to be true when he drops to his knees unable to move at the end of the fight. Furthermore, the entire reason Askin uses gift ring, as he says, is because Kisuke was too dangerous to fight in a physical contest. Not only is Kisuke too smart to be tricked, he’s too strong normally to be contested head on for Askin. So, no, Askin does not scale to Kisuke

Kisuke likens his nerf to being “barely able to crawl”. It’s just beyond self evident that he’s massively nerfed. You would have to prove that Kisuke is relative to his full power, or else we just have no grounds to arbitrarily say Vollstandig Askin is at that level.
Now the anime could change this, hence why we’re waiting on the anime.