Some of them have to have been fatal or at least very serious. The guy who was hit by the Cub survived, albeit with a sore head. He was a TV reporter and was interviewed shortly afterwards looking a bit bruised. The Cub sustained a nasty dent on the leading edge of the wing. I actually remember when it happened as it was for a piece on a British TV channel. The pilot wasn't supposed to be that low but he misjudged or was showing off.