You mean who is getting the bigger bounty between "the Wing of the Pirate King" and a secondary character's right hand man ? Sanji, obviously. Killer would be extremely lucky to hit a billion, which I don't think is happening. His hype is more about him being tied to Kid rather than about him individually, which is the big difference with Zoro.
I have a question for those who voted Killer : who do you think has the bigger bounty between Marco/Shiki's right hand man and Scopper Gaban ?