Completely agree, JJ, but there's one last little hiccup that might (or might not... I'm not an attorney) help the OP out.
If Carvana was using the Monroney sticker to represent what features were on the car in their advertisement of the vehicle, and upon which they based their purchase price.... well, I think you can see where I'm going with that.
Yeah, I can.. I was typing something to the OP in a similar vein just now. I think we are on the same page there.