Well, after playing nothing but 2h on my main for a good two years, with polearm alts and eventually two generations as a polearmer, I can say this:
Even with 100+ ping, playing as a two hander is laughably easy. Most of the time I find myself with very little reason to block, because I can out speed probably 75% of the people I encounter. I honestly think that 2h wasn't effected at all by the turn rate nerf, seeing as how I can still spin around and use the hilt of my sword to effectively disembowel my enemies, while if the same thing was attempted with most polearms, I would be stuck looking 90 degrees to my left with a blade in my head.
The real advantage I find with polearms, is that they can be wiggled very effectively to seriously confuse your opponent (Kaoklai does this very well), and it's usually not hard to hit around a block or shield. However, this can still be countered most of the time, since they're usually slower than you and can't feint 2-3 times and still hit you while you're mid swing.
Currently playing polearm / 1h, sometimes I hoplite with a +3 bamboo spear, but on most maps a German poleaxe or my +3 scimitar work best by themselves.
EDIT:
Not saying this or that should be buffed/nerfed, but I do think there may be a slight issue with 2h gameplay.
