Good chapter for Sanji. Standing up for his friend, getting a good hit in on Killingham, using Concassé again. Great all around. This is the time for Sanji to rise to the occassion. He's strong, he's been tasked with beating a Holy Knight and Conqueror's is needed for that so it's time for us to see what Sanji's got. I'm excited for what Sanji's got in store.
As for the rest, I will say I'm not opposed to Oda having a unique lay-out as far as arc fights and stuff go, but the issue is whether what we get is better than most of the crew getting standard match-ups. I don't know, some of the crew would probably be better off with individual opponents but this does help the arc progress quicker than if that was the case. I think Zoro will be covered though cause Oda will have him look good regardless. DR giants offer fine targets for him to refine his usage of aCoC. Plus, Zoro never needed a Holy Knight to show aCoC against since he already displayed it against King and won that fight. Sanji's catching up as far as CoC goes and this is perfect for that. Killingham's strong enough that even the MMAs he spawns are acting as people's arc fights, so this will definitely do Sanji good.