Metallicube on 02 February 2011
The main reason: The multiplayer. It adds a ton of replay value to the game, and fits better in Wii's "social gaming" persona. Red Steel 2 I felt was more similar to Mad World than Red Steel 1, in that it was far too niche, stylized, and limited its value from the lack of multiplayer and its very short single player.
The other reason is Red Steel 1 had the luxury of releasing during the hype of the Wii's launch. Launch games generally have inflated numbers from non-launch games.
