If this is true it really sucks. The [borg] proc with turrets and cannons is one of the few ways a cruiser can really excel at STF's. I'm not a "cruiser+cannons=win" person but I use to swapped out rear weapons for [borg] turrets religiously while STF grinding.
Seems like a waste to me as turrets and cannons have the same problem. The Borg proc is broken for most borg in STF's. Works fine in borg ouside of STF's.