less than 700k android smart watches were sold over 2yrs... i think it's the popularity. Not to mention the AW is much easier to pick out. They obviously have a reason for it, be it they've noticed people playing with there AW's too much while at tables or caught someone cheating... who knowsThe best part about the article you added in your edit is the last paragraph that reads:
"What is it about the Apple Watch - as opposed to other earlier-to-market devices - that gives the casinos the belief that the device can compromise game security?"