More than double the amount sold for Star Wars? A lot of fans have refused to buy that because it doesn't have the originals. I imagine STID will not be as successful as ST'09 in light of Paramount/Bad Robot's latest tactics.
Also, there's a caveat to that list. It only captures sales from July 2009 onward. It's missing the first 7 months of sales for The Dark Knight, yet it's at 2.6 million. That's probably the true #1, making Star Trek #4.
I don't think the sales for the format from before that year were as high, but the numbers are probably not exact.
The majority of people who purchase blurays are not Trekkies, and most won't care exactly what the extras are.