I'm glad it's selling well, Ninja Theory and British developers needed a hit. Other than GTA or car games, not many of our games sell much.
Let's not forget Batman: Arkham series...
I also would like to add that Enslaved sold quite well BUT not to that amount that Namco Bandai had hoped for. I think it sold around 800 000 copies the first month or so, so it has probably sold over a million without problem. The problem is that that ain't enough for Namco Bandai to start making a franchise of the thing wich seems to be what they were aiming for.
Oh yeah, forgot that. Sefton Hill is awesome :)