How can the 25GB King Kong HD Port be considered "reference material"?

[vamsilak]

Actually its a good qauestion;
kingkong hd dvd is like 30gb almost
I believe kingkong on bluray even though its say 50gb i t might came under 42 or 32 gb

another possibility is hddvd and bluray uses variety of codecs
mpeg-2
avc
vc-1

when they encode the movie to High def formats these codecs gives various bitrates which ultimately gives different GB

as far as i know it won't be much difference in the size after all