Phasic rounds bypass shield gate, and since we're talking platinum you should be using equipment anyways.
Phasic rounds negate Shield Gating?! Since when?
I've heard it doesn't negate shield gate, it just gives a 10x multiplier against shields, so the shield damage is insane, therefore the 25% damage that gets through the shield gate is still decent damage.
Greatest STP of all time: http://i.imgur.com/niJah96.jpg