On the left below is the same original 400 dpi scan of the color print, and on the right is a 1950 dpi scan of the negative on a 30 bit Microtek 35t Plus film scanner. Both images have had the same sharpening treatment. Nothing is faked. There is a considerable difference in the detail achieved in the same size image. That these two are far from equal is the best proof that prints cannot deliver expected detail over 300 dpi.
Film is better.
Megabytes are very desirable when printing large images. The images above were done three years ago.