Yeah you being pedantic and picking apart words and meanings on a tangent made this thread great.
You and BHR seem confused that he is directly referring to sales with the word 'big'. Big directly infers popularity = sales, not how one person or sub-section of a community perceives quality.
Uncharted 2 probably has the best chance of hitting 4 million than the other Sony exclusives - which wouldn't put it far outside Metal Gear Solid 4.