Law and kid have the same bounty as luffy a yonko tho. They each got equal credit for taking down kaido and linlin according to the world government
Like if we assume that was exactly what happened and the 3 were somehow equal in strength
Luffy still has
- A way stronger crew than either
- A way stronger fleet than either
- Way more influence than either
- More territories than them
- A lot more past accomplishments coming into wano with the highest bounty
- And alot more
Yet they still got equal credit for taking down kaido and linlin
Same thing in dressrosa where luffy and law again shared equal credit and got the same bounty. Also in both cases luffy's crew got a base bounty increase do to luffy's accomplishments not the other way around