First Strike:
Calculate all Numbers.
If Mutual Destruction, bFirstStrike = true
Else bFirstStrike = False
If bFirstStrike = true, side with First Strike is "winning"
Example, you have three Heroes, I have three ECs, one with FS, two without
Your three Heroes are dying, my two regular ECs are dying, my FS EC is NOT dying
Therefore, I have a live guy, you do not, so ECs are winning, Hero's turn to play.