Canon 1D MII has a 8.0MP APS-H (28.7 x 19.1 mm ) sized CMOS sensor . On the other hand, Canon 1D has a 4.0MP APS-H (28.7 x 19.1 mm ) sized CCD sensor .
Below you can see the 1D MII and 1D sensor size comparison.
Canon 1D MII and Canon 1D have sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture. On the other hand, since Canon 1D has 101% larger pixel area (135.02µm2 vs 66.93µm2) compared to Canon 1D MII, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.