Nintendo is apparently much bigger than EA.
I don't know a lot about economics, I'm only 14, but I'm still learning. Anyway, I think the total value of a company is the market value.
Electronic Arts Market value: 16 Billion - http://www.forbes.com/lists/2007/18/biz_07forbes2000_The-Global-2000_MktVal_6.html
Microsoft Market Value: 275 Billion - http://www.forbes.com/lists/2007/18/biz_07forbes2000_The-Global-2000_MktVal.html
Sony: 52 Billion - http://www.forbes.com/lists/2007/18/biz_07forbes2000_The-Global-2000_MktVal_2.html
Nintendo: 34 Billion - http://www.forbes.com/lists/2007/18/biz_07forbes2000_The-Global-2000_MktVal_3.html
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS