There's probably not to many people who carre about the sales, a lot of my friends don't give a crap when I tell them how many millions each console has sold, they just buy whatever they like and thats it.
But I'm really glad I found this website before I was going here http://nexgenwars.com/, and if you go there you'll see why I was getting fairly frustrated with there numbers and the system they were using to calculate the numbers lol