The difference grows with player skill, and it's bad for Rumble jungle.
That is true when we are comparing Rumble Mid against Rumble jungle, but imo for the most part they should be considered on their own, because:
Sure, maybe Morgana (liked you suggested in the video) is the best jungler, maybe mid rumble is the absolutely best champion in the game. I think the part that people most take offense to/disagree with is that Rumble jungle is just bad.
And Rumble Mid has the "Azir curve", whereas Rumble Jungle looks to either have the bellcurve (if we want to interpret into the -0.5 between Plat and Master/include Bronze, Silver) or is pretty much completely flat (past gold).
Rumble jungle is underperforming very simlarily among multiple brackets of play. And that flat underperformance can again be attributed to players having less experience on the champion than would be ideal.
One final note, somewhat unrelated: I alw...