Balrog's blog is not an official report of development costs. Plus, even if true, I thought his comment was about big budget games, not the average cost of 6th gen games, which I remember being just around $7-8 million. So if you double that, you get $15 million, which is the reported average cost of PS3 games.
Plus comparing Uncharated to these games can't just compare content. Games don't cost per hour of gameplay. They cost for development time, man hours, and resources. Plus pushing the graphics takes money, and Uncharted had a custom engine, that is designed to push the PS3, while neither Mistwalker game really pushes the 360.
A flashy-first game is awesome when it comes out. A great-first game is awesome forever.
Plus, just for the hell of it: Kelly Brook at the 2008 BAFTAs
