Bleh, I'm not keen on when people use HDR on a scene which only has a fairly normal dynamic range to begin with.
In most of the clips on that video the 'darker' of the two cameras was pretty much exposed fine...
HDR shines when you have something which is clearly impossible without multiple exposures, like shooting something with a bright sun right in the shot.
Shooting normal stuff under a diffused sky with it just results in weird, unnatural looking footage which is inferior to a conventional original.
HDR is great, don't get me wrong, but overuse is it's biggest problem.