Yeah but that means that they could just hang up on u ya know so that’s why trying to deal as much damage as u can to both at the same time is better don u think?
ur more likely to win if u have less aponents, and no one travels together in a 2v1, so for example if your plating on castles map. And ur posted behind the battlements, with 2 enemy's running at you. If you aim for 1 of them, then you can just take the other 1 out later, most likely with a surprise attack, that's how I'd do it