The entire frame has potential what with being able to 2 burst at base, the problem is that generally the harder hitting or more flinch a frame causes, the less AA it has. And higher AA I'm also pretty sure means more bullet magnetism to an extent. So when 340s only have 28-40 AA tops (I think all the ones above 34 are exotics), you basically need to be pinpoint accurate which no one is. The only exception I can think of at this moment with that part about AA is burst and rapid fire sidearms. As it stands, 340s probably no matter the AA will be good unless they get their range increased to be comparable to heavy bursts or they get their damage increased so you can 5 crit 1 body. The entire frame isn't worth using over all the others because that ttk means nothing if they're the hardest to use.