Sony exclusives that went multiplat have largely failed

[NobleTeam360]

Spin-offs never sell as well as the main series like MGS4 to MGS Rising. Also the PS2 user-base was very fragmented going to either 360 or Wii or PS3 and also look at the PS2 number of consoles over 150 million so of course a lot of those games will have sold better than the sequels.