I said "pretty much all". :P
A lot of people watch vids of guys in r13/t2.5 with r14 weps/HoR hitting for 1500+ dmg white crits and 1200+ dmg soc crits on undergeared clothies that die instantly and go "wow ret looks super viable at 60 you can just one shot dudes with your crazy good damage" but that really isnt what its like unless you have that gear and get great rng. Most fights are gonna be grinds where you only come out on top cause of proper use of healing/Def CDs.
Don't get me wrong tho I'm not saying pallies aren't viable, I love the class. Just trying to make sure he has a realistic expectation of what hes getting himself into.