Get a double Quarter Pounder with cheese instead and its 1230 calories and 101 g of carbs (10 g of which are added sugars). That's 33% of calories from carbs, which is also in the moderate carb range.

As far as the burger itself goes, a doubler Quarter Pounder with cheese is 740 calories and 41 g of carb (10 g of which is added sugars). That's 22% of calories from carbs and would count as a low carb item in much of the medical literature.

Americans tend to go overboard. They hear that cutting back on carbs has been shown to have some benefits, and they think this means they have to cut back from the 50-60% calories from carbs diets they are on to 5-10%. That is very hard since it eliminates most breads, pastas, rice, potatoes, and deserts. It is costly and/or time consuming to maintain such a diet. Most who try will fail for those reasons.

In fact much of the benefits from reducing carbs will come with a more modest reduction to around 40%, which can be achieved without having to largely give up the aforementioned foods. It is much easier to stick with it when you can still eat at most restaurants, including most fast food places.

Is emmer or kamut much better? What about red fife, a strain of wheat from ~170 years ago?