found this:
http://blog.wired.com/games/2007/04/japan_watch_ps3.html
Japan Watch: PS3 vs. GameCube vs. PSP
A Japanese blog has totaled up the PlayStation 3's top five software sales after five months on the shelves, and NeoGAF posters jumped in to compare them to the PSP and GameCube. The results... will shock you. Not really:
PS3:
- Gundam Musou - 230,000
- Ridge Racer 7 - 130,000
- Gundam Target in Sight - 130,000
- Resistance: Jinrui Botsuraku no Hi - 120,000
- Armored Core 4 - 80,000
GameCube:
- Super Smash Bros. DX - 1,022,000
- Pikmin - 430,000
- Animal Crossing - 355,000
- Luigi's Mansion - 320,000
- Sonic Adventure 2 Battle - 116,000
PSP:
- Minna no Golf Portable - 351,000
- Shin Sangoku Musou - 262,000
- Ridge Racers - 262,000
- Tales of Eternia - 168,000
- Piposaru Academia - 112,000