The tie-break system which is used for the USATE tournament is based upon both board points as well as your opponents' scores, detailed in the USCF rulebook on page 203 (34G2 - U.S. Amateur Team System).
But the above chart tends to support the challenge of Chess Mates of Rahway NJ, as follows:
Using the alternative rule 34G2 on page 203 of the USCF rulebook, we ended up in fourth place.