We don't have massive ranged burst, nothing like operatives. If we do hit we get mitigated the most since our damage is the one most affected by armour and such. I've tried all three specs and nothing comes close to operatives level of damage, or evens mercs level of constant damage, or sorcerers damage, it's an absolute joke.
Line of sight is a massive issue since just about everything, including the capture nodes on alderaan block our view. One bit of latency issue and you can be damn sure you're rarely get an ambush off. Operatives have more burst, more defenses, easier to move and able to choose when you fight, snipers have none of that and have the poorest damage type as well.
Lethality is ok, buts it's really nothing compared to the levels of damage other dps aimed classes do.