You might have been matched with a tier 4 alliance. Then the multiplier and nodes are selected at random between the two tiers.
You might have been matched with a tier 4 alliance. Then the multiplier and nodes are selected at random between the two tiers. However dumb it sounds this is unfortunately the case. I got same response from Support when it happened in the last war of last season and due to that we missed P3 by 3k points.