Let me just clear the air here.
The original poster is very wrong. I play sentinel, i dont even consider alts. I like my class and strive to be better at it.
The buffs for us are extreme in my eyes. But I speak of Jedi Knight's as well as Sentinel since both areas being buffed have made us something to be concerned about on the field.
And for the vast majority of people saying Watchman/Annihilate is the top spec, you are all wrong. The top spec is Combat/carnage.
Anyone can go watchman and spam fluff dmg as aoe topping dmg meters etc etc. Combat and Carnage have incredible burst and are the most dangerous when running an assist train. This is why seeing the changes to combat I find this a very big buff.
I can sympathise for the casters, as even before 1.2 I had no problem at all dropping most of them. Now with no focus spent on interupts we have 2 extra for more Blade rush spam, legslash if ever needed etc etc.
Your comment on Pacify being useless in pvp actually has 90% of sentinels/marauders who know their class giggling at that comment, as well as clapping their hands in excitement as it has been made extremely useful. Even before I would make sure it was used every time the CD was ready, if not on my target but on someone getting pounded.
I dont see Temperance as a nerf. If your not using sweep or cyclone while out of combat then you didnt realise that spamming these when not doing anything gives you Centering. I have never specced temperance and do well enough without it.
The basics of this class are ridiculously easy to pick up but it amazes me that there are so many who can't understand the mechanics well enough.
Feel free to disagree about watchman/anni, but i strongly think combat and maybe focus is the way to go now. Rated warzones will be about control, high burst and good assisting. Watchmen can lock out a healer easier but this is irrelevent to good combat/carnage players.