I see the "Vita SW sales don't include digital..." line is here already.
Yes, these sales figures don't include digital but since there's absolutely nothing to go on in terms of estimating Vita DD sales on a per title (or across-the-board) basis saying "they don't include digital" adds little to the discussion.
It'll be the same when Nintendo roll out their retail/digital releases later in the year. Unless they start releasing sales figures for digital titles, all we'll have to go on - and all we'll be able to use to judge the success of their games - will be the retail figures we get, and saying "bu-bu-but the digital..." will be just as useless.
You could say that the number of ratings of a title on the Playstation store is a MINIMUM indication of how well it sells digitally.