Well, tried some fleet action last night...WOW. I thought Plasma's were powerful in SFB...they will ANNHILATE YOU ALMOST INSTANTLY in Fleet Action in Federation Commander. Rule of thumb, NEVER, EVER, EVER get within 5 hexes of a Rom with fully loaded Plasmas.
We had three players, a Fed, a Klink, and me. I cloaked and went slow staying out of the first portion, where the Fed and Klink basically fought...Klink got wasted in the second turn and the Fed turned towards me. I managed to get my plasma's loaded, and he ran with his back towards me firing an occasional drone, which I vaporized.
However, he then made the fatal mistake of slowing so he could repair some shields, and I put all power except that in my Plasmas to catching him. Got within 4 hexes, Unleashed heck.
He shot back and hit me with a drone, but even with his rear shield Fully ready it wasn't enough to stop a plasma-R and two Plasma-F's.
I did almost two times the amount of damage his ship could take in Impulse 2, and he was done. That was it. Fatal Plasma instant death.
I think next time he's not going to slow for 43ll or High water.
He figured he could take at least one hit and survive it whilst trading blows with me, do a HET and hit me with overloaded photons...but no luck for him.
Plasma's are the BOMB in FC!