Compare the releases for the rest of the year...
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Blu-ray
http://bluray.highdefdigest.com/releasedates.html
HD DVD
http://hddvd.highdefdigest.com/releasedates.html
**
The only week that HD DVD even has a slight chance of doing as well as they did this week is October 16th (Transformers week) - other than that they are toast.
Take a look at November 6th - can you say 95/5 split?