I got kerbstomped using Hunters in Arenas at 70,from what i've seen so far of 80's I think its possible to get a few wins,but once teams figure out your boxing hunters they will easily adapt.
BG's are a totally different matter tho hunters are evil on some of the larger maps.
Hope this helps
[I'd also add that Hunters play best for me when I could dictate,track and move up into a comforatble positon to unload pets and ammo.
In Arena matches it was awkward and difficult to negotiate with nowhere to really run for kiting.
AV and WG are your best bet,trust me chaining frost traps and siccing BW pets on mages just never gets old,I use Hyenas for megalols Warriors just love it].