Mod Nation Racers sold over 1m units ww. SPLEE!!!!!!!!!!!!!!
http://www.vgchartz.com/tools/game_comparison.php?reg=Global&ending=Cumulative&game%5B%5D=Asura%27s+Wrath+%28PS3%29+%5B47330%5D&game%5B%5D=ModNation+Racers+%28PS3%29+%5B35099%5D&game%5B%5D=Asura%27s+Wrath+%28X360%29+%5B47331%5D&game%5B%5D=
if it hasn't been mentioned. MAG has also sold over 1m ww.