User blog comment:Mr Rinn/Mass Effect 3 choices poll/@comment-204.10.222.10-20130403164157/@comment-3217145-20130404080604

The "Mass Effect 3: Final Hours" iPad app has some info in it. Like, 70% of players with a romance in ME1 were unfaithful in ME2, 76% of players saved Ash, 89% cured the Genophage (9% did both in separate playthroughs), a whopping 17% think ME3 multiplayer is awesome (30% said "surprsingly good," and 14% said "get rid of it"). 1% of people starting playing the series with ME3 (meaning James was not only annoying, he was completely pointless). 18% of players played Femshep, 2.5% played as an Engineer, and 65% played as Soldier.

There are a couple other things in there too. Obviously it's possible, I'm not sure why they don't release more info and in a more widely available format.