I've heard that too. At AVS, DK gets 96 for Audio and 94 for Video the same reviewer gives Narnia 2 a 100 (perfect score) for Audio and a 98 for Video.
DK = 95 overall out of 100 N2 = 99 overall out of 100
The difference for some will be the stories. I have both of them... I mean, Santa is bringing me both for Christmas, so I won't know first hand until then.