I love the swing! Who is that? nevermind, I googled the characters and got Hiroyuki Fujita. Apparently he won the Japan Tour order of merit in 2012 (at age 43).
I am of the opinion that the guy is onto something interesting with that pause.
I did a mini-experiment with Mitch McDowell last year at the World Scientific Congress of Golf to compare swing speeds with and without a pause. I used an SSR radar device and he topped out at 1 mph faster with the pause. He was pretty surprised as I remember it.
Fujita's swing doesn't look very dynamic, although he does load the club a bit at the top.
I always found that I hit the ball more solidly when I "paused " at the top of the swing, but I don't know if I lost speed or not. However, I always felt I played better with the "pause" than not. Just my opinion.
Jimmy