100% this.
Despite all their flaws, Toei usually do ask Oda for important details and you better bet they asked him how this fight actually concluded. It is canon.
It's quite funny actually, since I for one always said that it's more likely Sanji got a good hit in and then got out of there. It's the smart option (no more town destruction, not getting injured before the final battle, not risking that X-Drake and Hawkins arrive) anyway.
It really is very open to interpretation in the manga. Some here make it sound like it was a clear outcome in the original source, which it wasn't.
For the other trolls: There is no need to bash Sanji, too.
Like I outlined above, it was the smart decision to leave. Not only that, but I think Toei also made it clear that Sanji would've clearly won, if the battle went on. Not only was he pictured as being superior, even guys like Law commented on the fact that Page One can't beat Raid Suit Sanji.