i think its fast because Wii's failure rate is pretty small from what i know, so they do not have millions of broken wii's coming in. Where as for xbox 360, everyday they get a LOT of them back and takes a lot longer. Same for PS3 when my PS3 broke i called them up, within 2 days i got the box to ship it back in and exactly 7 days later when i got home a new PS3 was sitting by the door