P > 2P? Yes. 2P > P? unless it's on CH, pointless. Crouch phase kicks in along the extra initial 2 added just makes this move slower. Such as the i13 palm where if you buffer it raw after being +1 from a jab you are not actually getting the proper advantage because you have to buffer the move first.. i13 will make the move feel as if it's a i15 because it has to be crouched.