1) hands, particularly palms forward, are much more invasive than the wand was. A TSO can squeeze/pinch/grope with the front of the hand in ways that are impossible with the back of the hand.

2) a lot more people getting the hands-on treatment - including involuntary medical opt-outs

3) NoS seems to require far more hands-on resolution than the WTMD ever did.

4) When asked if the 'new' patdown made him uncomfortable, Pistole answered 'yes', that "it was clearly more invasive than I was used to". And I'm assuming he's had far more patdowns in his career than most folks. Perhaps he could best answer your question, particularly since his answer seems at odds with some of what has been posted here and elsewhere (did the patdown change or did it not change?).