Digital BW, The Print

I am considering a move to higher resolution and a larger format 
printer aka Epson 4000 (I am assuming Dr Roark will find a correct BW 
ink formulation for that printer in the near future )..

The question IS : I have a 6x7 film camera. If I purchase a refurb'd 
scanner I can create 142 Mpix files.... Is this really 24 times better 
than a 6 Mpix digital camera ? 

Whats the generally accepted rule to equate analog (film) scans to full 
digital camera images ?

Thanks,
Alex P
Orlando