17 yo luffy defeated crocodile, Enel, lucci and moria.
Would current 17 chopper do any of that?
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Give bonney 2 years with rayleigh and she will be a PK contender.
17 y/o Chopper landed a hit on Queen who curbstomps everyone you mentioned at the time Luffy fought them.
17 y/o Chopper can solo pacifistas at this point. He's shown the speed to dodge lasers easily (dodged Queen's black coffee beam) and has the AP required to put them down.
If we're talking durability, it took an elephant gun for Luffy to knock out monster point chopper on punk hazard, whereas a jet pistol one shot a pacifista. So if monster point chopper is many times more durable than a pacifista, then barely any pre-TS characters even have the AP to take him out.
Nothing suggests Bonney has PK potential. Big Mom was far more of a monster at 5 and even she didn't have PK potential, she capped at Yonko level. Bonney is a prodigy, yes, but we don't know what her ceiling is. And it's not about how you start it's about how you finish.
Kaku has achieved what Lucci's achieved at an even younger age, and yet Lucci is considered the prodigy because he likely has a higher ceiling.