will not be the same quality, cams use Bayer sensors and scanners do not.^^
The DSLR I mentioned has pixel shift, so if you want it can take the R,G and B readings for each particular "photosite", so interpolation from bayer array is not done because we have real RGB readings for each sample, like scanners.
There are scanners that use Bayer sensors, to mention a remarkable one, Fuji Frontier, which also has sensor piezo shifting.
In most of the cases the DSLR shifting would be irrelevant for scanning, but in some cases it avoids color artifacts in the contrasty edges.
To get all possible image quality in very sharp MF shots the DSLR would have to take several shots to be stitched, to scan 35mm film the DSLR scanner would take most IQ with a single shot. A handheld shot won't usually require sitiching to get all quiality.
An important factor in a DSLR scanner is how we keep film flat and in focus, another factor is selecting the right lens that performs optimally in 1:1 or 1:2 magnifications.