Great post Mr Wheat.
For me there is about 10 things I look at. With me if they are not all correct it is bad. I have cards with varying amounts of the logo. Thing is the parts that are there are correct. These logos and the placement of them are very consistent. I have only seen one real logo that was way off from the normal position for that card.
The thing I see the most with people that have bad cards is they find a couple things that are correct and ignore all the problem areas.
For full disclosure if Mr Wheat isn't a expert I am just an observant novice.