reuters said:"Metal Gear Solid" needs to sell over a million copies on the first day it goes on sale due to its costly production, but that may be a tough mark to hit given sluggish PS3 sales.
A year after its release, only two PS3 games have sold more than 1 million copies, a benchmark of financial success for a big-budget game. The 7-year-old PlayStation 2 had nearly 100 games sell more than a million copies.
Ryan Payton(assistant producer) speaks on MGS4
So, who actually thinks this is possible? To give you folks an idea, consider The "Jesus" of all games, Halo3 that defeated every other form of entertainment that has ever existed, managed 2.7 million sales on it's first day. Is MGS4 strong enough to achieve over 1/3rd of those sales?