The size, the flow, the angle of the letters, the spacing, the shape of the letters, etc.
Okay thank you
"Any tell tale signs why this is a fake?"
To me, it looks like one probable result of if Carrie Fisher and Walt Disney teamed up on April Fool's Day to try to put one over on their old pal Michael, with an unconvincing forgery.
This is a very failed attempt at an earlier style Jordan autograph. But as I said it is a failed attempt.
Nope, stay away from that one