Here is the data from the NPD Group, an organization which tracks video game software, platform and accessories sales in North America. The biggest surprise is MLB 09 The Show OUTSELLS Killzone 2. Who would of thought.

PlayStation 2 112K
PlayStation 3 218K
PSP 168K
Xbox 360 330K
Wii 601K
Nintendo DS 563K

RESIDENT EVIL 5* CAPCOM USA 360 938K
POKEMON PLATINUM VERSION NINTENDO OF AMERICA NDS 805K
HALO WARS* MICROSOFT 360 639K
RESIDENT EVIL 5* CAPCOM USA PS3 585K
WII FIT W/BALANCE BOARD NINTENDO OF AMERICA WII 541K
MLB ’09: THE SHOW SONY PS3 305K
KILLZONE 2 SONY PS3 296K
WII PLAY W/REMOTE NINTENDO OF AMERICA WII 281K
MARIO KART W/WHEEL NINTENDO OF AMERICA WII 278K
MAJOR LEAGUE BASEBALL 2K9 TAKE 2 INTERACTIVE 360 205K

YEAR OVER YEAR

March 08 Hardware
721 Wii
698 DS
297 PSP
262 360
257 PS3
216 PS2

March 09
PlayStation 2 112K
PlayStation 3 218K
PSP 168K
Xbox 360 330K
Wii 601K
Nintendo DS 563K