Very good catch C2C ............... I was thinking one was possibly an ad in the packs themselves and the other was what you got from the HHOF. Will do some more research, as the way you say it they could very well be identical.
After re-reading the card at COMC, I honestly feel they are two different items, the one with an image on the DB says that it was only handed out AFTER payment so to me that reads as though they would not be in packs. The "Ad" card must be something that was in the packs explaining the card you would recieve at the HHOF. Yes? No?