I read that F18 rule the same as two of the "Mikes" in this thread -- doesn't have anything to do with listing brand names in results, as long as you don't separate them out into separate ranking systems based upon brand. It's strictly informational, like listing total crew weight -- which, by the way, would be another interesting and potentially useful piece of information.

P.S. The fact that that F18 rule is being interpreted in different ways must indicate that it is ambiguous and should be rewritten to make it more clear. It would be important to know what the intent was at the time it was originally written.