I agree with you Ramadear. On several occasions I have heard good things about compression software that microsoft uses with 360 games (not just limited to texture files, but with audio and video too), and coupled with the infrequent texture issues that happen with PS3 games (ghostbusters for example) I sincerely doubt that textures will be filling the BRD's. Video files perhaps, but I doubt textures.
Which is why I still smell the scent of using pre-rendered video to pass off as ingame visuals.