I'm no supersonic ping-pong ball physics expert but I'd have expected the ball to have deformed on impact and left an irregular shaped hole and left a more destructive wake than a perfectly ping-pong ball shaped hole.
I call fake. But I'm open to being wrong.
Now, assume our perfect sphere is a ping pong ball, with a seam and variations in density along its surface. Further assume that our plane is made of wood with a variety of strengths, weaknesses and densities along its volume. And that said plane is also covered in a rough surface. The changes that these variations impart on the actual experiment leave a hole blasted in the paddle that's not perfect in anyway (see all those jagged edges?) But I believe it's safe to say that, with all these imperfections in all these materials, the circle is not a "perfectly ping-pong ball shaped hole," and certainly more difficult to measure than a perfect sphere slamming into a perfect plane.