His inflamed bounty is bc of oda's guilt. Constantly trying to save crocodile's image for 20 years after arabasta. So it doesnt represent his actual strength which should be around 1.2b-1.4b at most. We have many examples of this guilt like:
1) gorosei discussing about his unexpected defeat by a rookie.
2) the reveal about his past, chasing whitebeard.
3) his mf rebirth- clashing with toptiers.
4) garp and sengoku mentioning his name during the war, basically expecting him to actually affect the outcome.
5) his current alliance with mihawk who would never ally with someone he consider weak.
1) gorosei discussing about his unexpected defeat by a rookie.
2) the reveal about his past, chasing whitebeard.
3) his mf rebirth- clashing with toptiers.
4) garp and sengoku mentioning his name during the war, basically expecting him to actually affect the outcome.
5) his current alliance with mihawk who would never ally with someone he consider weak.