Kirito is a skilled swordsman who has continually been outshining everyone through the years. It’s no exaggeration to say that he is one of the most skilled light novel protagonists out there. That being said, Sinon is an expert sniper and has no trouble dealing with opponents from afar. Kirito will have to move quickly to defeat her, but he has been proven to be up to this task in the past. Kirito wins.