The comment about any dangerous stunt having been taped or filmed months earlier holds true for all pre-recorded things of this sort--no matter who's done it, including David Copperfield in his upside down strait-jacket escape over the flaming spikes, or Lance Burton chained to the roller coaster track, or whatever.
Unless something is done live, the suspense SHOULD be lost--but it isn't, and this is where the power of film and TV comes into play.
When you're watching a movie, and there's suspense involving Indiana Jones or James Bond or Batman, you SHOULD know, no matter how suspenseful the scene, that your hero just isn't going to die or be critically injured. It's just not going to happen, yet the suspense is still there.
This is created through the power of skillful acting, photography, editing, music, and writing.