well if Jack is getting potentially taken down by Nekomamushi and Inuarashi and perhaps Jinbe, then it wouldn't be surprising if a team comprising of a similar number of members would be needed to take down Queen.
Based on how he seems a mish-mash of certain SH's, it's not unreasonable to have Sanji, Franky and Chopper perhaps battling against Queen. Yes, yes, Sanji lands the final blow.