Actually, when you trade a car to a dealership, you must sign an odometer statement verifying that the miles are correct. You must also sign a release of title showing you are the actual owner. IF it turns out the miles were rolled back, the original seller of the car is liable, not the dealership. So, to make a fair comparison once again, I'd say Urbie and the transfer agent were responsible for making sure the shares were legit, which of course they weren't and were found guilty of.
What else ya got?