Predicting Winter Survival

I was looking at the video I made on October 25th of me removing the top hive feeders and installing some small inverted jar feeders as one last feeding for the bees before I wrapped them up for winter — and judging from the number of bees covering the bars of the top frames, I think Hive #1 (on the left) is considerably weaker than Hive #2 (on the right). Ideally, what we want to see before wrapping the hives for winter, is a carpet of bees like this (taken on August 14th of this year):
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