EA's games do almost always tend to sell less on Nintendo platforms. Even during the GameCube era where EA and Nintendo collaborated to put Mario/friends into EA games and the GameCube logo was featured at the end of EA TV ads (rather than PS or XBox) ... sales of EA games that gen on the GCN were still poor comparatively.
Like lets take August 2005:
PS2 = 253,000
GBA = ~180,000
PSP = 167,000
XBX = 134,000
NDS = ~100,000
GCN = 53,000
Software NPD Sales
1. PS2. Madden NFL 06 - 1,461,380
2. XBX. Madden NFL 06 - 682,665
3. PS2. NCAA Football 06 - 121,553
4. XBX. Tom Clancy's Ghost Recon 2: Summit Strike - 94,889
5. NDS. Nintendogs: Dachshund and Friends - 81,979
6. GBA. Pokemon Emerald - 81,239
7. GCN. Madden NFL 06 - 80,939
8. NDS. Nintendogs: Labrador and Friends - 67,285
9. XBX. Delta Force: Black Hawk Down - 62,273
10. NDS. Nintendogs: Chihuahua and Friends - 60,463
11. GBA. Dragon Ball GT: Transformation - 60,141
12. XBX. NCAA Football 06 - 59,063
13. XBX. Darkwatch - 51,952
14. PS2. Lego Star Wars - 50,557
15. PS2. Delta Force: Black Hawk Down - 47,844
16. NDS. Advance Wars: Dual Strike - 44,293
17. PSP. Midnight Club 3: DUB Edition - 41,980
18. PS2. Destroy All Humans! - 40,988
19. PS2. Charlie and the Chocolate Factory - 37,796
20. PS2. Medal of Honor: European Assault - 36,127
Pretty massive difference in sales. Go back a year earlier and it's the same story
August 2004 NPD:
1. (PS2) MADDEN NFL 2005 - 1,112,588 - $54,142,420
2. (XBX) MADDEN NFL 2005 - 509,100 - $25,103,580
3. (PS2) ESPN NFL 2K5 - 448,433 - $8,897,210
4. (PS2) MADDEN NFL 2005 C.E. - 395,811 - $23,390,230
5. (XBX) ESPN NFL 2K5 - 311,359 - $6,165,545
6. (XBX) T.CLANCYS BLACK ARROW - 158,218 - $6,157,931
7. (PS2) SPIDER-MAN 2: THE MOVIE - 129,492 - $6,076,589
8. (PS2) NCAA FOOTBALL 2005 - 94,559 - $4,687,620
9. (XBX) HALO - 88,488 - $2,652,439
10. (GCN) MADDEN NFL 2005 - 87,404 - $4,307,765
