He had a knack for timely drops that cost Bills games so it was magnified. Pitt in OT was the worst, he also had two drops against Jets costing victory, one against Bengals(poor ref call), a fumble against Falcons in TOR.
Overall he did not drop a lot just timely.
He was open all the time. He was 7-11 before Hogan. all-22 fans would melt down if he played now. He turned Revis Island into Revis nude beach.