2 Handed Swords DO NOT have an animation bug as such, however becuase they arn't bugged and the rest of the 2-handers are, they've had their stats heavilly nerfed to keep them about the same performance to price ratio as other 2-handers. If you fix other 2-Handers animations (as some SP bugfixers have, and as CA will), you have to raise Zweihanders stats to make them competetive. At this point they can go through S&S units that arn't AP (like VHI), with a 2:1/3:1 kill rate. You don't even need to cycle charge to get that. AND thats with a fixed Sheild Bug.

So overall most 2-Handers do have buggy animations, (Halberds and 2-Handed Swords are fine though), ad those that don't, (apart from JHI), are extremly weak compared to what working 2-Handers do.

So come the patch, expect to see them get much better, hopefully.