The best champions outside of lane to counter Gwen include Sivir, Caitlyn, and Kog'Maw. These champs are all great at countering Gwen with decent win rates over 60%. Even if these Gwen counter picks are not taken in the same position as you, it's not a good idea to choose her into any of these matchups. They will likely crush Gwen.
Conversely, if the opposing team choses either Ziggs or Fiddlesticks, you should strongly consider choosing her, as she easily dominates these champions with win rates over 51% against each ofthem.
methods2.text1
methods2.text2
methods2.text3
otherMatchupsDescription