None of the cars that come with OEM Brembos other than porsche are track ready. The RS4 brakes with track pads installed are probably just as capable as an OEM Brembo offering.

I had a Brembo engineer talk me out of an upgrade as they found the RS4 OEM combo to have the highest heat resistance of any of their current non composite offerings.

There aren't really that many companies that manufacture brakes. To display the actual Brembo badging on the caliper would be more for bling than anything. Example - G35/350Z/STi.

And apparently the deal wasnt sweet enough for BREMBO to be displayed prominently on the caliper.