MadWorld is the first game from a developer that, in its previous incarnation, had not made a blockbuster.
GTA CW is not like the main series games, and even VCS had opened no better in its first couple weeks.
I think Sega and Take Two knew that big openings were unlikely. Legs are more likely, same with No More Heroes, Boom Blox, De Blob, World At War, etc. All of those were brushed off as flops after the first month.
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








