You can't watch MXC without wondering how drunk the contestants are to take such hits.
One thing that MXC did that Wipeout fails at is showing at least one clip of a contestant who successfully makes it through the obstacle. The Wipeout ones are clearly designed for programmed failure for effect. There's no sense of edge-of-your-seat"maybe...maybe...oooooh!"
Wipeout does have Jill Wagner though.
They did show one or two people every show making it to the end on an obstacle. But the thrill of the show was the constant failures.