Damn this scaling is bullshit. Garp ks 3 billion currently, not his prime.
And Rayleigh barely could handle 1 admieal while Garp is fighting more....
You are reading this quite literally very wrong.
Bounties are based on reputation just like Rayleigh was able to make Blackbeard shit his pants based on reputation and Whitebeard was WSM based on reputation.
World still looks at these people as World Beaters they were in their primes.
And bounty is assigned accordingly.
Cross Guild isn't out there quantifying how much Garp's strength has decreased.
And Garp is destroyed and bullied when he fought an Admiral with help. Rayleigh was equal to an Admiral. I think as fast as Rayleigh is, he will do a lot better in his scenario as Kizaru is way faster than Aokiji.