DVD is increasingly showing a strain in providing HD content.

[gekkokamen]

When has DVD been able to provide HD content? well, at least partially, in terms of games. But DVD hasn't , can't and won't ever (because it's just technically impossible) provide a full HD package (video and audio). You may have a partial "HD" game for the 360, in terms of game-engine, but videos (cgi movies) and audio (DVD audio is not HD audio) are not HD.