I think the main thing you need to realize is that is climbing with ropes there is a lot of overhead involved to do it safely. I'd say about 1/8th of the time is climbing the other 7/8 is spent with the logistics of the rope management, partner management and placing protection in the rock. With free soloing you can focus entirely on the climbing and not on the logistics. I honestly think its more about this focus and flow and less about the cheating death.