I actually ran across the same thing when I was doing some research recently. At first I took Fosco's word for it when he claimed it was Pranno but I found some other photos which show the purported Pranno. I wouldn't figure that multiple sources got it wrong, so I would guess that the guy in the photo is actually Potenza, I guess.

Pretty sure I have seven (possibly nine) now that PK has hinted at Nick Palermo but since Fosco apparently isn't accepting any more guesses (I've sent three with no response) I am not sure if I will submit.