I would say Chuck Westfall probably should've prepared better if he really wanted to present the 5Ds in a good light. As far as I can see it, it was not a good idea to compare the dynamic range of the 5Ds with the 5D Mark III, right after the DP Review guy says there has been concerns about that (DR of 5D III). He is just feeding the frenzy here. Similarly, comparing the noise capability of the 5Ds with the 7D II isn't really complementary,the latter being a crop sensor camera. I think on these notes Chuck Westfall could have just said that the 5Ds has competitive dynamic range and noise capability, and let people figure it out for themselves rather than surmising based on his comparisons.
The problem is, the camera raises too many questions to be slam dunk, the same way 6D did. It was a great camera that received negative PR due to missing some key features.
Chuck Westfall was clearly unprepared; when he was asked who would buy 5D Mark III versus a 5Ds,instead of pointing out the target audience for the newer camera and highlighting its strengths, he went on to say that people looking for lowlight performance, high ISO capability and advanced video tools would be looking for 5D Mark III, pointing out the 5Ds' shortcomings. Very odd.
Chuck did a great job and presented the camera in a good, honest and informative fashion. He's a straight shooter and doesn't play the games that you seem to want him to play.
Please don't be presumptive. I think that his responses in this interview seemed unprepared, and potentially liable to bias people against a new product instead of being objective. Clearly, your standards for good and informative might be different than mine. He does seem like an honest person, I will give you that, and I think he is quite popular for that reason.
For example, he compared the noise levels to the 7DII on the basis of pixel pitch and processor, but when the interviewer asked him why that wouldn't result in better noise performance as the sensor is much larger- he switched to saying cameras are evaluated independently. Fine, then why compare it with the 7DII and mention similar pixel pitch to begin with?
Secondly, if you are asked how the target audience of a new product is different, do you go to great lengths describing the strengths of the old product and its target audience. The interviewer had to specifically ask him again, to get him to talk about the strengths of the 5Ds, which is all he should have been espousing in this interview.
Regarding dynamic range- he says it is comparable to the 5D III. That remains to be seen- but saying that the DR hasn't changed when the interviewer specifically mentions there being concerns about it, was odd. Having said that, this was really a minor point compared to the above two, which seemed like "gaffes".
Say what you will, but I have seen a disconnect between Canon USA and Canon Inc. In a past interview, Chuck Westfall had specifically mentioned that Canon was interested in bringing back AF point illumination in 5DIII through a firmware update (unbidden, he brought it up). However, we haven't seen it yet, have we?