dude, are you serious? do you think that doing damage is the same with doing useful damage? i usually do 400k dmg + 150k healing, with a spec relatively closer to the one posted by you. all this in random pugs. but this is not so useful, when their healer heals 50% of my dmg.
you said that you can defeat anyone except those. funny, there are not many left. i can bet anything that a medium dps smasher jugger will kill you without losing 50% hp (i ate a 7.3k crit from a jugger less geared then me. and i was wh + weapon, offhand ewh). the new sniper can beat you if you dont have something to hide behind (before 1.5 patch snipers were my solo kill, now are more powerfull), a 30% healing operative can kill any non-healer sage, without much effort. (ps. on my ungeared assassin i can kill any non full-balance spec sage)
Beside, your build is not optimized, and also your rotation has useless steps.
you say:
"Bubble > Weaken mind > Mental alacrity > Force potency > TKThrow > Mind crush (proc) > Disturbance (proc) > Force in Balance"
why do you use force potency on 1-2 abilities that dont do the maximum damage? in this case the TkThrow will do 4500dmg instead of 3600
why do you use mental alacrity if you dont use disturbance next? this ability was definitely build for group attacks, when you are not focused (because the enemies focus healer) and you can use weaken mind, turbulence (!!crit), disturbance until proc (!! force potency) telekinetic wave (!!crit)[...] anyway, most of the ppl see mental alacrity fast, and will stun, push, or hide for a couple of seconds.
i played full balance, full tk, 3-4 kinds of hybrid, i have the feeling that i know alot of this class. for example i modded 2 kind of wh gear (before ewh gear): 1 with power and surge, and one with alacrity. i can tell, the one with power gives a much more chances to survive (until someone helps), slightly more dmg. i play on TOFN, we can meet and test what i'm saying