your pvp assault spec doesn't include assault plastique? seems like you are losing out on a good amount of burst damage
Might be losing that 5k crit on AP, but my HIB crits 56% of the time for 4.8k anyways and my IP with PC proc hits for 3k, I find, i do more just spaming IP and HIB,
I should try it and find out,
Also with Vanguard DPS, I found I could have 2300dps or 1500 dps depending on whether or not HIB proc goes off after 6 seconds , I have noticed that I could waste all 12 ammo trying to get it to proc.