Exactly what i was thinking. .5-.8 of a point, can be expected. One brassline could have had an off night while another had the night of it's life (while appealing more to the other judges ear.) But over a point in less than 24 hours... It almost screams bias towards SOMETHING in the category. (Not suggesting a love for one corps over another, but maybe one type of arrangement, or one lines technique over another that the judge prefers.)
I don't know. It's just a little weird to me...