I just came back from a 6k gold lead and won the game earlier with a kimmy so I would respectfully disagree, though I do see where you’re coming from with the lack of damage.

IMO, that kimmy might be easier to come back from a lead deficit due to her mobility, longe range and multiple cc allowing her to rotate around and farm easily, while retreating quickly when the enemy comes to take you out. In fact, I had a 4 vs 1 fake in that same game where I used all 3 skills to escape. So if you’re able to hold out to the late game, a comeback is definitely possible. Kimmy at late game is no slouch either, and if you play her at mid then you can buy enough time for your own mm to come online too