to me this is just adding up apples with oranges...i mean what's the point of counting titles that have to sell a fraction of 1M to get the first milestone along with titles that have already achieved this goal but have to sell 1M in the solar year to enter this chart?
you should actually choose either
1)count sales in solar year for every title and add the ones that manage to sell at least 1M in 2011 starting from 1st jan till 31st dec
or
2)count the titles that pass 1M milestone in the solar year (both new and already released title)
if you choose the 1st option you should count out titles like GTA: episodes for PS3...if you choose the 2nd option you should count out all the titles that has already achieved the 1M milestone in the previous years (eg: Kineckt adventures)
In othe words you can choose between counting sales (1st options) and counting milestones (2nd option) but a mixture of these criteria makes no sense at all.
44.2 M 
27.1 M 
20.8 M
