>>3034300Kinda. It's cool but until recently no sensors were truly 645. Now there are some, but the quality difference isn't huge until you spend like 100k between body and lenses. Sigma Foveon will get you 2/3rd of the way there with a better colour rendition, for crop enthusiast level prices.
>>3034324Resolution means jack shit. And no, not on most formats. 35mm true resolution goes somewhere around 16mp at best, 645 would be twice that, 6x7 four times that. So yeah, 6x7 would, with a great scanner. And this is all being optimistic, but again, resolution means nothing and nobody shoots film for resolution, even if 6x7 outputs better detail after very careful scanning, a digital raw will still be a better way to get there.