There is one major flaw with your final conclusion that I almost hate to point out. Without showing how many games opened with similar number and yet failed to make a million its not safe to say games opening to those numbers will make a million. Unfortunately the number needs a bit of additional work to make the last jump there.
Edit: In principle I stand behind this statement. In actuality I am havign trouble findign even a couple games per system that would buck this trend definitively. Sometimes solid logic can lead you to somewhat misleading conclusions. I will continue to look around.
As another though you might want to modify some of the 360 data as well. Lego Indiana Jones, Marvel Ultimate Alliance, and one of the Viva Pinata games (likely the best selling one) were all bundled for a decent bit of time. On the flip side Halo 3 should also probably be tossed out for skewing the data way too far in the other direction. Similar problems arise for Motorstorm on the PS3, but I don't think the one game will skew it too much.
