I don’t have a rooster but Bernie is a big gal and is quite assertive! Mine was a small hawk too - it was bigger than the pullet it attacked, but definitely not bigger than Bernie.
Very glad to hear it.
I had a hawk attack a few weeks ago. Miraculously I found no sign of injury at all - feathers everywhere but some of those I think belonged to the hawk because my lead hen laid into the hawk while it had a little pullet pinned to the ground.
Frankly we were all in shock...