while it may not be effective @ PVP how is it in endgame PVE? sounds like a serious shield stripper move
npc's are such enormous hitpoint sponges that its noticeable effect is a lot less then it is on player ships. they also don't distribute their shields, all you have to do is knock down a facing, maybe 2, and you can kill their hull. players that do distribute shields are the perfect victim of tetryon's effect though. tetryon are meh against npc's, disruptors with thier debuffs and AP with their critical and even plasma with thier dot work better.