Should just check the numbers below you've omitted. Obviously most score was from kills (+10 to you / -10 to them) because you don't get so many points from ice in such a short time. One premade party can easily spawncamp the whole alliance because they come one by one and get destroyed by limit breaks which charge very fast with battle high/fever. So if all 3 bases are occupied for 6 minutes you need maybe 80 kills total if you ignore ice.