http://www.vgchartz.com/swlaunch.php?reg1=America&game1=New+Super+Mario+Bros.+Wii+-+Wii[35076]®2=America&game2=Call+of+Duty%3A+Modern+Warfare+2+-+PS3[28847]®3=America&game3=Call+of+Duty%3A+Modern+Warfare+2+-+X360[28848]&weeks=15
http://www.vgchartz.com/swlaunch.php?reg1=All&game1=New+Super+Mario+Bros.+Wii+-+Wii[35076]®2=All&game2=Call+of+Duty%3A+Modern+Warfare+2+-+PS3[28847]®3=All&game3=Call+of+Duty%3A+Modern+Warfare+2+-+X360[28848]&weeks=15
America and Worldwide graphs there.
NSMB has already passed the PS3 version Worldwide, and with the next data will pass it for Americas.
It looks like it could pass the X360 version Worldwide with just 3 more weeks, but if not then 4 weeks.
For passing the X360 version in America it is going to take at least 10 more weeks I believe, possibly 15-20 weeks.