I'm sure they would. That, however, doesn't demonstrate that they show the EXACT same headshot. Honestly, if Muchmore was the only thing you had to go on, you wouldn't even know that the guy was shot.
I'm going to have to disagree with you, as I do believe that Muchmore's film and Zapruder's film show the EXACT same headshot, and indeed the EXACT same scene - obviously taking in to account the different perspectives of the photographers.
I can see NO inconsistencies.
I can see 100% correlation between things like:
* JFK's head being positioned forward and to the left
* Jackie's right elbow immediately behind JFK's left shoulder
* Moorman's position in the background
* Kellerman's head pointed straight ahead
As far as your "
if Muchmore was the only thing you had to go on, you wouldn't even know that the guy was shot" comment... seriously ? There's clearly a halo of blood and brain matter ejecting from JFK's head just as is seen in Zapruder.
I think a reasonable person can conclude that both photo's are depicting the EXACT same event and the EXACT same instant.
I believe the photo comparison below is strong evidence of this.
If you believe this is open to doubt, once again - prove why your doubts are founded in fact - and not just the "we can never really know anything with 100% certainty" thing...