If you Export the Master, all that information is present, and can be read, at least, with Graphic Converter. It seems, but I have not confirmed, that exporting a Version may involve conversions and loss of the manufacturer's name of the lens, etc, but not the settings, such as aperture, shutter, etc.
Do some testing with an exported master. I will need to test a direct capture from memory card to see what Photoshop CS4 can see, versus what is exported from Aperture. However, I can report that even an exported version when opened in Photoshop will display and report the shutter speed, aperture settings, ISO, focal length, flash info, etc, as well as the model and manufacturer of the camera.
Ernie