Nonsense! Sins have some odd the weakest burst and are, in fact, geared more towards sustained damage. Furthermore, nobody has any combat logging capabilities so all claims about relative DPS positions are ********.
You should be using Talos to level ASAP. If you haven't gotten him yet, 2V-R8 is a viable substitute healer with some items from Cybertech, commendation vendors, and the GTN.