And thus my argument of someone's first bounty being lower in relation to the captain and other subordinates.
Zoro got 60 million for defeating an opponent much weaker than Kaku and Jabra, unless you beleive that Daz Bones is as strong as them.
If Jabra was as powerful or more than Kaku, Sanji's bounty would have raised accordingly to Zoro's 120 million regardless of first bounty or not.
If you beat someone with a 1 bil. bounty when you already had a 500mil. bounty, you will get very close to the 1 bil.
Someone who doesn't have a bounty and defeats a 1 bil. guy, will NOT be close to 1 bil. You are not gonna jump from 0 to 1bil.
Zoro defeated Mr.1 and 100 bounty hunters before and didn't even get Mr.1's bounty of 75mil. If Zoro already had a bounty of 20 or 30mil. he very likely would have gotten a higher bounty than Mr.1.
Same applies here. Or do you think Zoro would have jumped from 0 to 120mil. just for defeating Kaku? No he wouldn't. Luffy defeated Crocodile, a shichibukai and got 100mil. for that and he already had a 30mil. bounty.
Zoro would be in the same range as Sanji, probably 80mil. Hence the reason why he got a lower bounty increase than Sanji, even tho he defeated a guy as strong as Sanji's opponent.
And again you use Bounties for power scaling - which is nonsense.