The bounty is ok, let's also consider the alliance factor, they go against Kidd or Law and they also go against Luffy.
Law already was a Yc1 tier at Dresrossa, so his bounty at dresrrosa was low, it already should had been 1 billion at least.
Now he had a PU of one of the most hated fruits, that already makes him near Admiral tier, and then we have a extreme diff battle against an Emperor, so yeah, he deserves that bounty.
It doesn't mean he is 2 times stronger than a Yc1, it just means he is more dangerous. Example King, Marco and Katakuri won't do anything unless their captain orders it.
The same for Kidd.
Law already was a Yc1 tier at Dresrossa, so his bounty at dresrrosa was low, it already should had been 1 billion at least.
Now he had a PU of one of the most hated fruits, that already makes him near Admiral tier, and then we have a extreme diff battle against an Emperor, so yeah, he deserves that bounty.
It doesn't mean he is 2 times stronger than a Yc1, it just means he is more dangerous. Example King, Marco and Katakuri won't do anything unless their captain orders it.
The same for Kidd.