I was going to comment on the hands too. I have a Palmistry background.
Looking at the video still, my first impression was, "That's not Michael Jacksons Hand." However, on closer inspection I think it is. I have found that when looking at hand shape using random photos on the internet, the angle at which the pic is taken can skew the shape of the hand and the shapes of the finger tips, as can however the hand is being held at the time. Maybe lens distortion plays a part too? I don't know enough about that side of things. However the lighting difference in both pics and the way the hands are being held on the above page means that not all of the lines are shown clearly in either pic.
Looking at the finger placement, finger length, individual phalange lengths, they all look the same. Finding 2 individuals with these 3 similarities alone would be unusual IMO.
Lines on the fingers seem to match up too.
Both hands have waisted 2nd & 3rd fingers.
Finger placement & alignment looks to be the same, as does the spacing between the fingers.
Placement and angle of the base of the thumb matches.
Lines at the wrist match.
Percussion side of the hand looks to be the same shape.
Palm colour / discolouring seems to be close enough.
Droplet finger tips appear to be on both at least 2 fingers on both hands.
"Knuckled" first phalange on the little finger of both hands.
It's hard to see all of the major lines clearly on both hands. From what I can see though, where the Head and Life Line meet and cross seems to match on both hands. The camera angle, lighting and the way the hand is being held IMO, is skewing the MJ hand and his lifeline. The same goes for the area of the Heart Line on the other hand. It looks to me that the Heart Line on the "imposter" hand is in the same place as the MJ hand, even though it's barely visible.
Here's a chart I made up a while ago as a guide of what I look for when comparing hands of two people. (I hope it makes sense to non-palmistry people anyway!