Dolby Digital vs DTS HD HR - is one intrinsically better than the other?

[Bruce Morrison]

I have acquired two Blu-ray editions of the German film Der Untergang ('Downfall'). Both have lossy audio - the UK edition has Dolby Digital 5.1 and the German edition has DTS HD HR 5.1. I've just acquired the German one under the mistaken impression that it had DTS HD MA 5.1, so it's still sealed at the moment and I have the option of returning it for a refund.

Can anyone tell me, is a DTS HD HR 5.1 track likely to be any better than a Dolby Digital 5.1 track, assuming that both have been taken from the same master?

Of course, if anyone has had an opportunity to compare these two specific editions of Downfall, any views on which is technically better would be very much appreciated.

Thanks in anticipation!