Your film was overexposed. The B&W at 400 ISO, f/1.8 and 1/1000s you would have an exposure value around 9.6. The color at 200 ISO, f/1.8 and 1/1000s would give you an EV of 10.7. The 1 stop more dynamic range on the digital allowed for slightly better compensation in the processing. Had you done a 1 stop pull on the film your results may have been closer. (You could also push your digital image one exsposure and get similar results.)
Daylight would be between 12 and 16 EV.
EV for Camera Settings
A = f stop
I = ASA/ISO
s = Shutter speed in seconds
EV for Lighting
L = Illuminance in Lux