If you look at 8:02 of the video, AR has beaten the CB and has to slow down and jump back towards the ball and Bradford pushes him away from the ball which allows him to make the pick. So first Trubs has options here. He can try and lead ARob since ARon has a step or he can back shoulder it.
By contrast, if you freeze this at 3 seconds, Foles throws the ball while ARob is still behind the CB. So he has to throw back shoulder because ARob isn't close to beating his man. Further, Foles throws that ball in a way where ARob is still actually moving forward when he jumps and catches it because again the CB is actually slightly ahead of him.
That pass by Foles is perfect given how the CB played it and where ARob is. By contrast the Trubs pass is anything but because he back shoulders it when ARob is on top of the CB and ARob has to slow down and jump backwards against his forward momentum to make the catch.
Football is a game of inches and there is no way those two passes are comparable even if they are both back shoulder passes because Foles understands leverage and position and Trubs does not.