I always pick out unusual things, especially when it comes to ads. My wife says I pay attention to insignificant details but I forget important things like "it's my Sister's wedding tomorrow. Did you get a suit" or "happy anniversary". Maybe she's right.
I noticed that it looks like D Wade doesn't get much action in the ad, so I counted each time a player bounced the ball as part of the rhythm, not including the bounce they all do at the end.
In order from left to right:
Dwight - 29
Melo - 29
JJ - 24
No-lenses - 33
D Wade - 5
Poor old D Wade. He would have been on set saying "Guys, can I be involved?"
LOL yeah, Just a guess.. but I doubt they actually were all in the studio, it was probably recorded at different times as individuals in front of a blue screen or whatever. They probably didn't even do it to a beat, may have been heavily edited to fit the song.