From the above link:
"Bono from U2 scores a whopping 72 points! That doesn't mean he's a Mary-Sue; it just means he has astonishing number of romanticized traits -- and although he's a real person, he might not make a very believable character."

WHAT!!!!!!!! Are you kidding me? That is the stupidest thing anyone has ever said! I suppose all biographies of interesting people would be considered Mary Sue stories with "unrealistic" characters. You know, like Patton, Alexander the Great, etc.
I truly hope "professionals" stop recognizing this idea as anything but nonsense.