User blog comment:Kaido King of the Beasts/Chapter 857: The Art of the Deal/@comment-4493594-20170302101139/@comment-24769684-20170302101747

I don't think that's Caesar - the hair is significantly different, I don't see any horns, and I think Caesar is a lot more thickset than that. Also, Perospero has Caesar's heart now.

I think Sanji would compare his situation more to Usopp's - remember how he was on the same boat as Zoro that Usopp shouldn't just be able to rejoin the crew after attacking Luffy. Now he's basically done what Usopp did, if not even worse, so it makes sense for him to not expect the crew's immediate forgiveness.