I wouldn't say best ganks in the game, unmatched mobility, or be able to delete an adc in team fights. But gj, the other two are right!
Who has the best ganks then? She is the only jungler who can catch up to the fleeing laner, cc them (if briefly) and burst them to below half health while being shielded from some of the counterdamage.
I said "nearly unmatched", maybe if you read you would see that.
And her ult does exactly that. No, she does not do it all on her own unless she is extremely fed, but Vi's ult onto an ADC is a sure death for that ADC.
Come back when you can actually counter what I said.
Amumu can catch up to the fleeing laner, cc them for much longer than vi, and his bonus armor from is e is underestimated.
Adc buys scimitar/banshees. Vi is now dead because she randomly ran into the enemy team.
Her mobility isnt even nearly unmatched. Its just about matched by 90% of junglers in the game.
Come back when you can present a counter argument without being a jerk about it.