When Zoro bisects Onagashima in half after mastering Enma he's going to shit on Tsar Bomba. I think we're going to need a better meme to describe Zoro's DC then. May I preemptively suggest supervolcano Yellowstone?
How strong is the King Punch? It was able to push back the sliced body of Pica from distance. Implying this punch could've destroyed the Golem as well. What about receiving that punch point blank? We know it wasted all the Colosseum fighters (yet Bartolomeo's defense laughed it off; must be incredible hard).
Answering your question, I think Sanji defeated Pageone for the following reasons:
- Sanji claims that he needed to defeat him without get hurt and quickly.
- The last panel of the fight is Sanji delivering a powerful attack and Pageone screaming throughout the capital.
- Then Pageone disappears from the manga.
It is very clear that Oda's intention is for the average reader to interpret that Sanji defeated