I've only asked for a crop... The contest was made long time ago:
http://www.largeformatphotography.info/scan-comparison/
Here you have scans compared from Drums to the V750, Cezanne, etc. The differences are made well evident.
About resolution take the scan from a drum and from a 750, (from the images in the scan-comparison) and apply sharpening to both until each enhances and compare. Little difference. Drums apply some sharpening in hardware, so this test if good to compare.
About color profile, once calibrated to the IT8 both should do exactly the same, as linear CCD dyes can be different, for a given film V750 vs a Drum can have different look, but take a image from each and build a conversion LUT, from then V750 and that drum will render equal tones, but a special LUT has to be made for each color film to match.
I repeat, for 135 and/or Velvia a Drum has an edge over, Cezanne has an smaller advantage. For color Print film and BW film LF that edge is seen with wall enlargemets at reading distance.
A good scanner operator can do more with a V750 than other people with a Drum. There is multiexposure, image stitching... and wisdom applied to color.
Perhaps you discarted the V750 before you controled it well.
No such a magic difference is there, what is important is own skills. Hype... there is more around than skills.
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