I think these from the list will reach 1M this year. I agree with the choices in the certain list so i'll start with the possible going down.
Burnout
SOCOM Confrotations
Madden 09
WWE Smackdown 2009
GH Aerosmith
Killzone 2 (I think it should be added to certain)
Tekken 6
SW: TFU has potenital to and i'm not too sure about the last remnant.
Wasn't killzone said to have sold 2M?
http://totalplaystation.com/psp/features/6951
@Fila
I believe nikos said add dbz burst limit because every game on the playstation has wen't over 1M. We shall see if this keeps up though.