OK, If all the images are divided by the same factor then it's fine for me. I was worried that it could be different from images to images depending on the overall intensity of each image.
This should not ever happen (and if it ever was different from image to image, it'd be due to a issue like the metadata in one of your images being corrupted, not due to the pixel values present); if you want to assure yourself that it everything is being scaled the same way, you can confirm in the Image_Scaling column that the scaling is consistent image-to-image.
What happens if you chose No in the Metadata modules? Does it interfere with the "Set intensity range from Image metadata" in NamesAndTypes module?
The metadata that sets bit-depth is pulled out whether or not you use the Metadata module or not, so no need to worry about that.