It is wider that normal, but that can happen if the stamp is from the left vertical row of a left sheet or the right vertical row of a right sheet. Stampazine (an old NYC retail store) once had a sheet of Scott 214 under the glass with the lower right corner stamp having larger margins than your 2¢ stamp. The right vertical row of perforations went off at an angle, getting progressively closer to the edge of the sheet margin.
Alan Campbell wrote on article in the Chronicle showing that the spacing between the outer three vertical rows on an Official sheet was wider than the center rows. So spacing between stamps can vary.