Not suprising that an E3 article would say PS3 has better games, after all it pretty well understood that they had a better showing at the expo this year.
I see that the list makes no mention of Metroid Prime 3, Mario Kart, Mario Galaxy, Super Smash Bros. Brawl, Umbrella Chronicles, Medal of Honor Heros 2, Civ: Revolution, MySims, Donkey Kong Barrel Racing, Wii Fit, Mario Strikers, or any other game on Wii for that matter.
The fact that they gave best fighting game to VF5 should clue you in. (I know SMBB wasn't at E3). They also didn't have best platforming game, or best FPS, (they decided to throw that genre in the Action/Adventure category from the looks of it). They also grouped social, casual & puzzle together and gave the award to a game that you will need to spend a couple hundred dollars on in perripherals just to make the fullest use of the software. (Definately not casual). They also decided arbitrailly that the Rock Band peripherals deserved to win over at least 3 peripherals offered by Nintendo that have recieved more praise from the rest of the online gamming comunity (gamespot, IGN, ect.)
I could nitpick this list all night its that bad. This list lacks cred and so does the site it came from.