I had the privilege of flying on a private plane this summer. "Not held to the same level of scrutiny" is a major understatement. There were no checks whatsoever, only a gate with a keypad standing between us and the airplane. We could travel with whatever we wanted on the plane. Yes, we had as many duffle bags as there were people, and no, nobody was even around to ask what was inside those bags.
It is a clear illustration of the utter pointlessness of the TSA checkpoints. The kind of terrorists who attacked us in 2001 could have used a private plane packed with C4 just as easily as a commercial jet.