I did a Copperbell Hard run, it's also AK gear. The good news though, is that you get 100 P tomes and 50 M tomes for it. Once you get the mechanics of the boss fights down, it's really not very hard. After a bit of practice it should definitely take a lot less time than AK, and you get better rewards for doing it.
but what ilevel is the new gear? i.e why would anyone who has a ***** set of tox, peltast, hoplite etc etc (il60) bother to farm the copperbell gear if its still il60 with a ndw name (assuming that IS the case)?
WP looks like it drops the same gear as before. So my guess is that AK and WP drop the same stuff. They reduced the amount of myth that AK yields to the same as WP, reduced the max time to the same as WP, and removed some packs of trash mobs to presumably make it about the same difficulty as WP. So it would make sense that AK is basically just a simple alternative to WP.