Of the top 100 2007 (YTD) films;
47 are from Blu-Ray exclusive studios,
14 are HD DVD exclusive studios,
29 are dual-format studios and
10 are not supporting either format currently.
and given that blue ray exclusives have grossed 52%, compared to a 10% share for HD exlusives, Blue Ray has the edge.
I'm not sure it's as much about the hardware as it is about the studios that support each side. and it seems quite clear that Blue Ray studios are making the more lucrative movies.
http://crave.cnet.com/8301-1_105-9740033-1.html
http://blog.pixelperfectproductions.com/?p=54