Same speed? :-) Are you joking? Elegant poleaxe have 92 speed. Another polearms go from 88 to 90.
Did you remember polearm grip? More reach? No.
2h is far better than polearms, because you get:
+5 speed from animation.
+Reach by animation
+Smooth animations
The only advantage I see to use a polearm is stun/bonus against shields.
I disagree with this on all levels. Polearms, seem/are much faster than their speed suggests. Try swinging a 95 speed warspear and 95 speed miaodao, maybe its just a weight difference, but the warspear seems much faster and you can feintspam like a madman. Whereas feinting with the miaodao just makes most people yawn. Same goes for comparison of a danish greatsword and long hafted blade.
Warspears, glaives and long hafted blades all seem ridiculously fast for their speed. You can pull of unbelievably confusing feints with all of these weapons. Also when these weapons get blocked, they bounce back in a way thats similar to the animation of chambering a new attack, so its hard to spot double attacks. I for one always get killed by double attacks by these weapons, which rarely happens to me versus 2h.
Several polearm stabs in succesion of eachother are also very fast. If a warspear user stabs and backpedals you can barely get a hit in.
I'd say polearms get the +5 speed with their animations and more confusing feints. I don't believe you can state these things, you must not have tried both.