User blog comment:Commdor/ME2 Fails to Crack NPD Mid-Year Sales Charts/@comment-730941-20100720023754

I'd say the latter as well. In terms of top sales charts, ME2 is going up against gigantically popular shooters (Modern Warfare 2, Battlefield), a whole slew of Wii games that have a very broad market, including kids (WiiFit, Mario, Pokemon) and one or two breakout successes like God of War and RDR. To sell 2 million copies in its first week is an achievement in itself. I don't think this is necessarily a sign of ME2's lack of sales or popularity, just that more broad-appeal games dominate the market (and will probably continue to do so).