How did I even win this match?

I had 1 item from 1st 3 minion waves..

a gold from next, and 4 gold from next one..

I only got items in the late game and my comp was pretty bad (i even had 2 ionic :|...)

I only got karth late game (and had only my spare ionic) and overall i only had 2 ionics, a luden (on jinx casue she 2stared from picking her >_<), tear (on zed from a mid round pick).

My synergies were also not very well (from my view of understanding game)

when I actually "try" i usually get 3rd but this weird match i manage to win....its weird.