I think Oda could’ve given that to them like 1.4 and 1.5 respectively and if Oda still wanted the birthday connection he could tacked that onto the end of those numbers. Also the Government is clearly not against huge bounty increases given how Buggy went from 15 mil to over 3 billion
I’m not against Zoro being higher then Sanji but Sanji should’ve had a higher bounty then Jinbei. Sanji literally defeated a Yonko commander while Jinbei only defeated a high ranking Headliner. In theory the only people stronger then Queen in the Beast Pirates are King and Kaido himself so the only reason I think Jinbei is higher is because Jinbei has the longest history as a pirate in the Strawhats if you exclude Brook