We can work it out ( all versions, from Youtube )

[javlim]

Who is the real Paul? 

I think is in the 4 cuadreante, please look this video.





Paul 1,2,3 are equal and in the 4 cuadrante is diferent, please obseve at 1:32 his chin is flat.



Also has the rythm like in his first shows with The Beatles, Faul only makes playback
.

[B]

All of those appear to be Paul. No need to muddy the waters.