Apples and oranges my friend. Depending on the Jurisdiction, prostitution is obviously illegal. But it's a consensual arrangement. It was victimless. I don't even understand how u can lump those two situations together.
Apples and Oranges are both fruits. Point being, both should cause a "stain" to the image of the NFL. Different stains, but stains nonetheless. It's like asking if a stain from fruit punch is worst than grape juice.