not gonna lie
anyone who knows how to farm efficiently will always carry a game as 
i start 55 ap flat in my runes, play extremely passive and almost exclusively use Q to farm by the time 5 minutes hits i have 35-40 farm, and 20-30 of it is bonus ap. so thats 85 AP with a rank 3 Q before first back.
as soon as first back happens its over. i can build whatever i want safely just because of how much ap i already have.
so im extremely safe early, and late im just unstoppable.