AW Damage output is impressive.
Which dagger class is better than other is very, uhm, relative.
Depends who are you fighting and numbers :S
If you are fighting players that like to give back to daggers, trying to "hit % run", AW is best imo, incredible dmg output in blows...
Fighting ppl that never ever give back to daggers, AW is fucked up, because its selfbuffs have -30% blow rate at front each.
TH are the "best" you can get against tankers. (I use "best" because tanks pretty much pwn daggers), giving their dash, you can bluff-land-blow-blow-blow and run more easily, and if bluff doesn't land, just keep running and hope you don't get stunned rooted, beside human CON can help a bit against stun...rather than being a delf stun magnet. Also, root => pretty much pwned for both...thats why having both MJ/NM set in inv is pretty good. XD.
In Mass pvps, depends lots in your partners, and skill.