Sabo's bounty is what makes me question it. It's also not like his bounty being less can be justified by any means because he directly puts the WG in danger. The only reason I give him the benefit of doubt is because 'Luffy's brother should be stronger' but till when? I definitely don't think that it will always be the case. For now, I'm keeping him = to Luffy but he can go below or above depending on the future of his character, probably below tbh.