>>3116578depends
pixels to grain is a really bad comparison and can't really be done accurately
50mp is pretty close to a lot of 6x6 colour films in terms of print size. However the argument can be made that large film grain looks better slightly soft interpolated digital edges but that is neither here nor there.
B&W film on the other hand can have much smaller / tighter grain, and something like Delta 100 6x6 could be closer to the 100mp + range
I don't know why but is seems to me that even c41 B&W film outperforms colour.
