At this current point at time I would say that we are around 5% behind sentinels based on 4th encounter in EV, but also relys on the gear and perfection of rotations.
By actually thinking. We just cleared 4/5 nightmare (jokemare) in a single night while wiping at most 4 times on a boss, I hope this game gets HARDER because right now its a joke because people like you can have trouble thinking about how mechanics work.
I hvae 6 peices of pvp gear (head, boots, belt, 2 implants, ear) which is a total of 276 expertise, I have been facing everyone between level 10 and 50, I dont notice that much of a difference between the levels of people apart from the hp difference.
The rotation I used in HC FP's and raids is; Saber throw, Force Leap, Sundering strike, Plasma brand, Overhead slash, Blade storm, then a mixture of Sundering strike, slash, strike and master strike depending on cooldowns and focus.
I can easily kill a healer 1v1, heck today on voidstar I managed to kill a healer while he was healing himself and another guy was healing him, then carried on to kill the second healer, dots, interupts, force choke, push and leap can kill anything
Seriously what? I am a level 50 guardian vigilance spec with a decent amount of gear, and if I crit any of Plasma brand, overhead strike, blade storm and eventually dispatch I can easily be hitting 2 - 3k on each attack and just slaughting people in pvp while having huge mobility (force leap and gaurdian leap on 15 sec cd) and 2 tanking cooldowns, if anything we should be nerfed.