I don't think it was nerfed too much. Personally any weapon that can be wielded as a 2h should be 2 slots (in my opinion). Just the fact that you can use a 2h'ed weapon that is 1 slot is a huge advantage for you. In a pinch you can pick up a better 2h'ed weapon and be proficient in it. Someone who uses a 1h/1slot weapon does not have the option to pick up a better weapon if they run out of bolts/arrows/throwing weapons, or if they are the last one alive. Well they do, but in theory they could already be using those better 1h weapons, since they are all 1 slot.
It's still a really nice weapon, and you are (in theory) proficient in 2handed weapons, so you can pick up any 2h'er on the field and wield it proficiently.