It appears most think it's fake on those links, but no one says it IS fake. There is one guy who claims to have seen the video in 1978, predating the CGI necessary to pull this off.
It's kinda like that Tiger Woods video where he bounces the ball on his club and after a while drives the ball midair. No multiple camera shot and no CGI but no one believed it was real.
Then again, look what they did in Forrest Gump with ping-pong. But they could not have done that movie in 1978.
Hope it's real. It's still amazing.