800mil is a lot but it’s evident Oda buffed him physically with more stamina and better haki, so a portion of that is well deserved. Stamina is a very valuable asset for something as lethal as an awakened Ope.
My honest opinion is Kidd and Law deserve their 3 billion because they are that strong and poses that level of threat. In the same token, Luffy deserves 4.5 billion and Zoro deserves 3 billion.