I really want to see this cube in person. Looks too uncontrollable from the video.
Edit: I now remember this cube.
I had the same cube except it was with white type C cubies and D centers. It's just that the screws were unscrewing and I lost that cube. It was awesome when I had it, but I didn't really do many solves with it. I don't know how well it
cutted corners, but it was pretty good.
edit2:
Result: 47.40809 degrees.
ROF2L!!!
I guess you have a good cube that cuts corners better than most, but I'd estimated at about 35 degrees from the video.