He's certainly not an unbiased source, but Tsunekazu Ishihara, President and CEO of The Pokémon Company, believes that Pokémon will play a deciding role in the console race. The notion is certainly not unreasonable, as Pokémon is still as hot as ever today. It's the second most successful video game franchise in the world (behind only Mario) and the most recent Pearl and Diamond games on DS absolutely dominated the April charts with over 1.75 million copies sold.
"The hardware which has Pokémon on it will be the winner," declared Ishihara to GameSpot.
It's not always easy for a game franchise to go on for ten years or more without feeling somewhat stale, but Pokémon continues to have great longevity.