for me its probably bow, pole n rhino, in that order.

bow = imo op cos auto aim. heaps of bow kills looks like they have really good aim like toxiq, but u know it wasn't skill. i.e. maybe 1/3 times they probably wouldn't have killed me if they were using dsg or gauss instead.
pole = still bit op in small maps like skyline n annoying.
rhino =imo op, everyones got high kdr with rhino.

I'd have to say the bow. I played a lot of Hunter mode so I've used it a lot, but I admit to using it in other modes as well for around an hour maybe. And got kills I most likely wouldn't have if I used other weapons. Gotta hate it when people start using it on servers where it's not allowed just so they can piss off the other players.

Jackal = I like shotguns, but the jackal has no range no damage and the mag is too small. Where is the "increased damage" from the last patch...?

OGR = The only weapon in the game that after each patch got a little "help" but still no one uses it..

Bow is the worst. Take away auto-aim, fire cloaked and zoom- Add flight time and arrow drop and it would be challenging enough for only the best players to master not just anyone. Then I would love it.

Close second- any AR with a laser. Way to easy.

I hate the trend of putting bows in games, so I'll say the bow.

I can't say bow because I play hunter mode mostly, but AA should be removed. Maybe from rank 50+.
For me in hunter mode are most annoiyng permanent poledancers (and divers). Yes, I use pole too ocassionaly to poke shieldholder out from hideaway but guys running around the map and "mowing" everybody who can't run away are boring.