Brett Walton: "Mass Effect 2 looks to dominate the big releases this week with over 470,000 preorders. Going by previous pre-order to week one scalars, an opening of over 800,000 in the Americas is looking likely - only Halo, GTA, Call of Duty and Gears of War have had bigger openings on Xbox360 to date. With a strong launch also assured in Europe, Mass Effect 2 should easily pass one million units worldwide in week one.
MAG also looks like having a strong first week - over 300,000 is looking likely although the title benefited from some strong pre-order incentives along with a public beta, both of which will have helped to inflate pre-orders a little hence the seemingly more conservative week one estimate. Two Wii titles also have big releases this week - Tatsunoko vs. Capcom (~70,000 week one) and No More Heroes 2 (~20,000 week one)."