"We all know what you're wondering about these two games. Which is better at making that number on the scale go down? Out of the three articles I've read comparing the differences between Wii Fit and EA Active, the weirdest idea they've seized on is the PR meme that EA Active is a 'Western' game. To paraphrase, thanks to its sweat inducing exercises it can satisfy our cultural expectations for exercise far better than the stretches and few exercises of Wii Fit.
An easier distinction is a mechanical one between the two games: the Wii Fit knows its limits. I've played both games (my unflattering Wii Fit review) and despite the extra sweat EA Active gives me, it's still inferior to the Wii Fit. Obviously a lot of this boils down to my personal opinion, to give a "Western" review neither has made me lose weight, but mechanically EA Active just reaches beyond what the motion controls can really do."