Why make powerscaling based on the actual manga panels, when you can listen to the Narrator, who LIES ALL THE TIME, and... One Piece Twitter.
The power scaling standards for this series' fanbase are so ass backwards that you can see some people's rectums when they open their mouths.
Chinjao was clearly an elite Pirate in his time, if not Yonkou, High Warlord Tier.
Mihawk is not a Yonkou, and no one wants to fight him (except Shanks and Zoro).
Sai is also lowkey really strong, Lao-G's final form was serious business.
Prime Don Chinjao is still probably stronger than Gear 5 Luffy in an extended 1v1 with no breaks/Kizaruber Eats occurring.