Why isn't Quinn played more often as an ADC?
I've only played her two games as an ADC (Others were as Top or Mid which were alright too) and both times I did really well.
First time, 19-5, got a Penta (Didn't have problems teamfighting but that's probably cause I was already so far ahead that the frontline wouldn't be able to hold me down) and second game 13-1.
She's honestly really powerful and the only thing I see as being a problem is her ult not being compensated enough for being turned into a melee form (Defensive stats plox) and her AAs being sorta buggy cause sometimes harrier procs don't go off (Got me killed in the second match, would've been a perfect game otherwise).
Another might be her range but Sivir and Lucian have even smaller range and even if Sivir has teamfighting abilities with her ult, long range Q and AOE, Lucian is pretty much in the same boat as Quinn isn't he? Then there's also Jinx and Graves. Jinx has her AA range increase but Graves is all about burst just like Quinn.
EDIT: These were in normals so maybe it was just cause I did well against people who were practicing or trying out new champs that I think Quinn is really good as an ADC...? I mean I don't think she's top tier or anything, just deserving of more than just a cheese pick top lane.