As far as I understand, some kind of bar, or other guard that resembled that of 'normal' cruciform sword was crucial characteristic of those.
Here some sources and one pretty reconstruction
So Bill's stats from PF seem that they could fit very well, with disarm bonus and additional defense.
It also seems pretty much way better than glaive, people who had written those weapons for PF quite apparently didn't agree on what should be power level of similar martial weapons.