CoffeewithGames shows the game-play data, sales data, and review score averages for New Super Mario Bros. Wii compared to Super Mario Galaxy 2.
CwG says in the intro section, "This week, we look at the data for both games again.
The image above shows the data for the first 15 days worth of play-time data, after both games released.
The image down below shows the current data for New Super Mario Bros. Wii compared to Super Mario Galaxy 2."
CwG sales in the sales section, "As of 6:00AM this morning, both New Super Mario Bros. Wii and Super Mario Galaxy 2 were ranked behind God of War III and 3D Dot Game Heroes, both of which are on the PS3. God of War III and 3D Dot Game Heroes were discounted 25-33% off their MSRPs, now just God of War III is discounted that much."