Duh!! I made it quite clear. Powerscaling is not possible from that fight. But if you want to do that, you can't prove Denjiro is stronger.
Because if your argument is that Denjiro was holding back. Well...Zoro wasn't 100% either. So, you have two choices:
- Accept that Zoro and Denjiro fought on equal footing and move on without powerscaling
- Accept that they were both equal in powerscaling based on the assumption that Denjiro was holding back while Zoro couldn't be 100%.
Any other conclusion is completely unjustifiable.