Coppers vs Platinum Plugs in an 850 Turbo engine

[UncleBoost]

Ok heres the scoop, and me being the skeptic I am, I would like expert opinions from more experienced .

My 855T jerks and sputters on heavy acceleration (Pedal to the floor).
Instead of Ohming out the High Tension wires, I replaced them with NEW.
No fixxy.
I have done too many things to repeat here again. Those who know me and my posts are probably familiar. I have done everything Matthew and a few others have recoomended as far as Troubleshooting. Many new parts in the Fuel system (except FP reg. and injectors)

My question is I have put AC platinum Plugs in engine .028 Gap. Is this a Bad choice???
I was told that these engines love the cheap Copper plugs.
Can someone shed some light on this if it is true as to why the difference?
I thought platinums where the Horse Dong of spark Plugs.
The term "Blowout" comes to mind. Does the turbo Blow out the spark on a Plat? or should I rephrase and say is the combustion pressure to high to thus prohibiting a hot enough spark?
Or am I on LSD and way off base?
Hit me!