That's the difference I noticed too. I agree that it does look better. Kind of looks like they mastered the two at different color temps.
When it doesn't look like DNR for sure, which is the case here, it's the VC-1 codec.
I'm telling you(not you specifically KMF) unless it's a high bitrate VC-1 encode it just doesn't get along with Blu-ray. Not slamming VC-1, but you got to give it room to breathe on BD. To prove my point I present the case of the Uni BD that's shown biggest improvement, so to speak, from it's HD-DVD counterpart - Miami Vice. According to the specs thread it has a bitrate around 30Mbps, more than 16. If Bourne doesn't follow this same pattern, I'll eat a tiny hat. Since Bourne has a highbitrate, if no DNR is used, I'm betting it will look non DNR-ish.
BTW - does Universal have two separate teams one for catalogs and one for day and date titles. Every single catalog is VC-1 and new releases are AVC? I just think that's weird, that's all...