Old Garp being 3 bil is correct same as admirals.
Prime Garp would be 4.8 bil in my opinion.
Prime WB is 5 bil Old WB would be 4 bil
Prime Garp would be 4.8 bil in my opinion.
Prime WB is 5 bil Old WB would be 4 bil
WB’s bounty would actually be lesser the further back in time you go.
Besides that, using the same proportion you did for Garp, it would actually be around 3.1 billion for old WB.
The only take away is that Cross Guild’s system doesn’t compare to the WG’s.
Things like the Admirals having over 100,000 troops, Warlords/Seraphim, majority of the world as territory to monitor would make for ridiculous bounties in the pirate scene.