Marksmen are the weakest champs in League.

First things first, it should be known that my only matches as a marksmen are when I get filled. Secondly, this is a low elo B5 - D5 opinion/perspective.

My mentality on balance are two champions in a duel being on equal terms. With this way of thinking in mind, there's never been a time I've been playing as a fighter, tank, assassin, skirmisher or mage, caught a marksman by themselves and not been able to kill them or force them to retreat.

I also realize how powerful marksman are when you're at the mercy of their auto-attacks. The problem aren't the marksmen, it's normally team composition. If you have a dedicated protecting your marksmen and tank with hard engage on your frontline, the marksman will absolutely melt your whole team.

This isn't imbalance, because we all know if you could actually get to the marksman without their support or engager around, you'd easily insta-gib them or force their retreat.

Marksmen = extremely high damage with extremely low sustain. Their sustain are the supports and peelers.