NXT is designed to sheet after a few washes. Meguiars #21 which is based on NXT does the same thing. You can email Meguiars and they will confirm that for you. So it seems in this case beading doesn't mean a thing. Sheeting is desirable because the water doesn't sit on the car possibly causing water spots.

If beading is your thing then try Collinite 845 (Insulator Wax) or Blitz one grand, they offer exceptional beading, good durability and ease of use.