Fight one horse sized bee or 1 million bee sized horses

Horses aren't a hive mind and they aren't retarded. If they were forced to be aggressive the ones that can see at the front will panic when they see something 120 times their height flailing around throwing other horses relative metres into the air. They will want to fucking run away. They are animals, they don't have a plan of action, a leader or some kind of cohesive advance; the ones at the front will panic and collide with the ones at the back and you would have a horde of a million little horses panicking and killing each other

>you can outmaneuver the horses

once again youre failing to understand what 1 million horses looks like.

The floor would be a lattice of brown horses, you wont be able to see green anywhere. The horses will likely climb up your arse and stuff world war Z style where they trample over each other to gain height