Arms Race

How is a winner determined in the Arms Race map when both sides have eliminated all armies except for the missile launch space? If either starts their turn at that point the game ends because the person that starts their turn is erased from missile launch. If both players do not start their turn and get kicked for missing turns which player receives the win? I suggest future battles here are decided by number of armies remaining on the missile launch or the ability to attack the missile launch from the opposite missile launch. And it would appear that the winner is decided by whoever is listed first in the game is the first player to miss a turn which gives the game to the 2nd player on the list.....ridiculous. I had 4 times as many armies left and he was able to bombard my 23 armies on the board with only 14 to start.