That's bot a good estimation but here we go...
Q1 FY2011
PS3+PS2 = 3.2m
PS3 = 1.8m (56%)
Q2 FY2011
PS3+PS2 = 4.9m
PS3 = 3.7m (76%)
Q3 FY2011
PS3+PS2 = 7.4m
PS3 = 6.5m (88%)
Using the same PS3 ratio from last year to this year (even so I think the PS2 drop is bigger than PS3).
Q1 FY2012
PS3+PS2 = 2.8m
PS3 = 2.4m (estimated - 66.3m LTD)
Q2 FY2012
PS3+PS2 = 3.5m
PS3 = 2.7m (estimated - 69.0m LTD)
Sony reported 70 million PS3 shipped as of November 4th, 2012 * my estimate fits *
Q3 FY2012
PS3+PS2 = 6.8m
PS3 = 6.0m (estimated - 75.0m LTD)
That's is what I can do for you guys.