not debateable
this is straight fact.
Every AP jungler in some way shape or form has to cheat the jungle in order to be able to jungle effectively. That's just because of the nature of jungling. this normally is either an abuse of a mechanic or item/summoner.
but its universal why they always lose. AP junglers need to use cooldowns to farm. AD junglers have shorter cooldowns and if they are hunting you will always have their cooldowns up.
AP junglers shouldnt be a thing, they always cause problems if they ever become meta due to the nature of AP itemization.
Remember nid?
high elo remembers.
Remember Tank ekko?
high elo remembers.
Remember any point in time old Eve was meta?
get the point?