"More ACCURATE versions" ?? Why not just admit Your version was INCORRECT? There is CORRECT and INCORRECT. You play around with the Images and your work product is going to reflect this Manipulation. INCORRECT Version(s) = INCORRECT Conclusion(s).
You really don't get it, there can never be a CORRECT version because NONE of these cameras were in the EXACT same location or were all using the EXACT same lenses, therefore there can never be a CORRECT version, then on top of that is the poisoned well of bad video transfers, Pal copies, distorted images, manipulated images and so on which finally means that by definition there will always only be INCORRECT versions, but that doesn't mean that 95% accuracy can't be used to derive a logical conclusion.
JohnM