NPD December numbers

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DreamsCast said: Top 10 Video Games - December 2006 360 GEARS OF WAR - MICROSOFT 815.7 K PS2 GUITAR HERO 2 W/GUITAR - ACTIVISION 805.2 K PS2 MADDEN NFL 07 - ELECTRONIC ARTS 737.1 K GCN LEGEND OF ZELDA: TWILIGHT PRINCESS - NINTENDO 532.9 K WII LEGEND OF ZELDA: TWILIGHT PRINCESS - NINTENDO 519.2 K PS2 WWE SMACKDOWN VS. RAW 2007 - THQ 484.5 K NDS NEW SUPER MARIO BROS - NINTENDO 427.5 K 360 CALL OF DUTY 3 - ACTIVISION 410.8 K NDS YOSHI'S ISLAND 2 - NINTENDO 407.2 K PS2 CALL OF DUTY 3 - ACTIVISION 365.3 K Top 10 Titles - December 2006 INCLUDES ALL PLATFORMS (consoles and portables) Madden NFL 07 - Electronic Arts 1.9 mm Call Of Duty 3 - Activision 1.1 mm Cars - THQ 874.0 k Need for Speed: Carbon - Electronic Arts 871.6 k 360 GEARS OF WAR - MICROSOFT 815.7 K PS2 GUITAR HERO 2 W/GUITAR - ACTIVISION 805.2 K Lego Star Wars II: The Original Trilogy - LucasArts 792.3 K WWE Smackdown vs. Raw 2007 - THQ 731.6 K Tony Hawk's Project 8 - Activision 713.9 K Marvel: Ultimate Alliance - Activision 642.9 K

I don't get this, Twlight Princess sold 532.9K + 519.2K, how come it's not on the second chart?