Pretty good, unexpectedly.
I though Sommers would have been the perfect Sanji's opponent (he had the typical pattern and the love theme twisted), but in the end Killingham, with the nightmares, aerial combat, thunder spear and all, fits well too.
Talking about choreography, it's already better than Queen's one, but that fight had such a well done power up narrative, with the Germa stuff connected with Queen himself, that I think it's too soon to decide which one is better overall.
We have to see how Oda manage this CoC awakening, that's the crucial point.