You must be doing it wrong.
Im pyrotech specced, and 9/10 times Im miles ahead of any other dps in warzones.
Great mobility, great damage and great fun. I wouldn't trade my bounty hunter for anything. I'm only in half champion gear, a few centurion and the rest PVE gear from daily quests.
I did the weekly today, playing about 15-20 matches and was top in all of them, and I have no premade, only que solo. I just hope they don't nerf us.
Some screens for your viewing pleasure.
http://img189.imageshack.us/img189/9749/screenshot2012011201211.jpg
http://img337.imageshack.us/img337/6769/screenshot2012010903140.jpg
http://img198.imageshack.us/img198/6339/screenshot2012010603232.jpg