Nantz kept saying the receiver needed to keep possession all the way through his falling to the ground because of contact from the defensive player, but that was not the case. Moore went down without being touched by the defense. Isn't the rule different since Moore went to the ground on his own?
My amateur interpretation was that he had control of the ball, his back was on the ground, and the defender's leg touched his hand, instantaneoulsy making him down with the ball in the end zone. If this would have happened at mid-field, he would have been ruled down by contact, thus it was a catch for a touchdown.