This guy writes about weight loss and the media. His latest post is one of many where he's noted (over and over and over again) that energy-in matters far more to obesity rates than energy-out.
Interesting reads, and it seems to make sense. In my efforts for weight loss I controlled both my eating and exercise, and while the exercise certainly helped me feel comfortable eating what I wanted, it was super easy to eat more than what I was expending. Think about it, is it easier to eat a grab bag of chips or run for an hour? The bag takes maybe 5 minutes to eat and nearly no effort. With a "normal" life where you work 8+ hours a day, it's nearly impossible to exercise enough to keep up with what you'd eat.
So... eat less folks.