EA have claimed that FIFA 08 has sold over a million copies across the PAL regions in it's first week. Ni news on what individual formats did. PS2>>>PS3>360 seems the most likely based on the charts.
http://www.eurogamer.net/article.php?article_id=84960"EA said FIFA 08 has shifted more than one million copies across Europe in its first week on sale, pushing it to the top of German and Spanish charts yesterday."