Attach Rate
The European Attach Rate doesn't take into account the fact that most HD-DVD player owners buy their discs from the States where even with import duties and tarrifs they're half the price and region free. Blu-Ray on the other hand is often region-locked meaning you have to buy domestically.
If I look at my own collection the figures for Europe would show HD-DVD purchased: 2, Blu-Ray purchased: 40
So what's my "preferred" format? I have over 200 HD-DVDs purchased from the States. 'Nuff said!