Originally Posted by AVRevForum.com
Both high definition camps are beginning to put much of their focus on the software title releases. While there are more titles available in Blu-ray, upcoming releases in both formats should provide an interesting face off. Blu-ray looks forward to releases of major blockbuster films, namely "Spider-Man 3" from Sony and "Pirates Of The Caribbean: At World’s End" from Disney coming up this Fall on their format. Meanwhile HD DVD will be releasing "300" and the hit Sci-Fi TV series "Heroes: Season One" exclusively on the HD DVD format.
Source: Forbes.com, Washington Post
300 is not exclusive to HD-DVD, I just pre-ordered it from Amazon on Blu-Ray.
I don't know if it's a choice or there are just more Blu-Ray titles released but the Best Buy where I go has twice as many Blu-Ray movies as they do HD-DVD.
Same for CC last time I was there.