I've played both 2hander and polearm .
I am not a good duelist compared to other skillful players i see here , i consider myself as average player.
I try to duel and learn as much as i can and so far i can tell you these:
2hander class as a sword wielder has much more potentials on duels.Animation of attack and block is helping to confuse your opponent very much if you combine your feints,turns and footwork.
When you block to cancel your swing and start swinging from other side(Feinting) , you can barely see that block if you are using a 2handed weapon but if you are using a polearm it is obvious that you block so it is easily understandable that you canceled your swing and you are going to swing from other side which completely doesn't confuse your opponent so he/she will either attack you or block your 2nd swing so, polearm animation is not feint friendly .
Here is the problem:
Polearm users are trying to use techniques which work on 2handed weapons.
Feinting works very good on 2handed weapons and it is a good way to confuse your opponents mind but it doesn't work on polearms.
People keep trying to feint with polearms and when they fail,they blame 2h as OP.
I suggest trying these instead of feinting with polearms:
-Use footwork
We stun when we hit so they'll be immobilized always try to get behind of your opponent and deal your finishing blow from their behind.Do not forget that no one can block when you hit from their behind !
-Use hold attacks
Since most of the players are feinting all the time people are just tapping their block thinking of you'll feint and they should be fast click on block to get ready for blocking your 2nd blow.If you hold right swing for example 1 second , most of your opponents will first block left then they'll start blocking other direction or swing at you thinking that you already swong your weapon but you didn't so once they stop blocking,swing zhe polearm .
-Use feints to cover your hold attacks.
Always start fight with few feints so people will think that you'll fight like other polearm users.
-Do not backpedal it is lame tactic and most of the 2handers will outreach you anyway.
-Always try to get behind of your opponent.
-Improve your footwork.
I think polearm is a very good class but harder to learn how to use on 1v1 situations . In battle if you hit an enemy with a polearm there are 2 outcomes
1-You kill him
2-Since you stun him,your teammate will finish him off.
Yes 2handed swords out reach polearms but this is natural i think.
I see no unbalance problem between 2h and polearm.
As i said,the only problem is polearm users are trying to fight like 2handers.