Not low carb, but healthier than a typical pie and lower calories. It's a treat, not something you eat every day.
That guy lost 100 pounds I think it was and has kept it off for a couple years. I look at people who are thin and were fat and if what they did worked or assisted, then I perk up my ears. That guy, Alton Brown looks fantastic and he's a chef too. He was huge before.
Low carb is a great way to go and carbs definitely are a big reason people get fat when they over do them, probably the main reason. They're addictive in some people. The same pleasure center of the brain lights up in carb addicts as cocaine addicts. People addicted to carbs will sometimes get the shakes when they cut them out cold turkey. But it's not the end all. I've lost weight and lost it relatively quickly without being terribly conscious (as in counting) about carbs other than cutting out breads, crackers, noodles, rice, pastries, cookies, sugary juices, butter, mayo, greasy, creamy sauces etc.