Originally Posted by camaj
Possibly Marwin, I just think they put that in there this week to make it clear. I can't believe they would exclude combo's for any reason
I got clarification from the editor in chief of the magazine yesterday:
The two previous charts did not include HD DVD combos. The charts going forward will. With combos included, the Blu-ray wins in the previous weeks would be a little less impressive. We cannot give out units. Blu-ray may win on an inception basis sometime this month, even with the combos included.
Also, WRT whether they added retrospectively the 2006 numbers:
They definitely have counted them all. A mere correction of the first two-three
weeks would not caused such a swing in the since inception figures.
Firstly, how many units are sold per week? HD DVD shipped units in 2006 were 1.5M, which is an average of 180,000 units per month. Also, sales are likely to have been stronger more recently, thanks to the release of the HD DVD add-on. This is borne out by the graph on thedvdwars site. So, unit sales in 2007 are being of the order of 100,000 - 200,000 units a month, IOW 25,000 - 50,000 a week.
Secondly, most titles sold are not combos. Right now, on the amazon top 10, only one (Hollywoodland) is a combo. On the rentrak ranking (taken from davisdvd), two titles (Superman Returns and Miami Vice) are combos. So I say about 10% - 20% of total sales are combos.
So a correction of at most 20 percent of at most 150,000 units would amount to a maximum of 30,000, ie two orders of magnitude below the since inception figures or both HD DVD and BD. Therefore, negligible.
OTOH adding retroactively the combos for 2006 would be a correction of 10% - 20% of approximately 1.5M titles, ie 150,000 - 300,000 units,
which is enough to affect it visibly.
Also, note how the since inception ratio in W1 without combos and W3 with combos are very very similar, which gives credence to the idea that the correction was similar to two weeks' worth of BD sales: some hundred thousand units.