I bet a million dollars that it wasn't that simple. If Chris Johnson had a clean run at the edge, and the end was sealed, Ray would have had to give some ground in order to tackle him.
I'm willing to bet, though, that Chris was not running full tilt toward the sideline. He may have had to change directions or stutter step. This would give Ray time to catch up.
I could tell you why Ray caught him if you posted the video. But one thing I GUARANTEE: It wasn't because Ray had some superhuman "catch up" speed.
The speed cheat is the NUMBER ONE SIM KILLER. It should not be allowed to return in ANY FORM.