Forum:Phasic Rounds

Does anybody know what Phasic rounds actually do? From the in-game description, they sound exactly like Disruptor rounds, only without a chance to stun or set up tech bursts. The only advantage they appear to have is a longer delay of shield regeneration. Is that it? I can't fathom why they would include such a totally superfluous ammo bonus. The only thing I can think is that they can somehow negate the shield gate effect on higher difficulties, since the description reads "apply phasic rounds for one mission to break through enemy shields, increasing damage." Does anyone know if this is the case? Do they do more damage to shields than Disruptor rounds? Do they do anything other than give a mediocre damage boost and delay shield regeneration? I have accumulated tons of these things, and I can't see why anyone would ever want to use them unless they were completely out of Disruptor rounds.