Apples and oranges. Multiple film cameras firing together would also be better than multiple digitals. And you still have similar issues with knitting things together as now each camera is a slightly different perspective.

> Multi-cam instantaneous shots do work though.

That's a good idea

> And way better than noisy film.

Larger film = less noise

That’s N times more expensive and much more difficult than shooting single camera though. And, digital sensors have noise, too. Try shooting low light and you’ll see.