My guardian, he is lvl 50.
Problem is I cant defeat the Emperor. Its quite disappointing after completing 99% of the quests and I had no trouble with high level bosses.
I'm thinking about unsubscribing.

You probably need to get the higher end pvp gear

lvl 50 Sith Juggernaut (Immortal spec)

pve: content cleared (normal, hard, Nightmare) and got both of the nightmare title's ( The Unyielding and The Infernal )
pvp: valor rank 64

Server: The exiled Crystal shit server with 20-25 people on the fleet on peak hours..

Jedi Knight Guardian is my favorite. Currently playing on Grand Master Zym, but looking to reroll.

not sure
tho i dont have the finest gear, my gear is not that bad and i was ok with all the previous bosses
but as i saw many ppl had trouble with the emperor q, and many could only complete it in group
another crap thing is that i dont have gear for my droid (not if he would make such a big difference - T7 became weak for the endgame)