Doesn't even need to be fast food for a burrito to get crazy though. Carbs and protein cooked in fat, covered in fatty protein, fatty carbs, a little more fat, garnished with some dietary fiber mixed with fat and then wrapped up in some hot, dense carbs glued together by fat is gonna have a lot of calories. Can also have a lot of great nutrients, and you need all those fibers, fats and proteins but damn is it heavy.
All the best foods seem to be geared towards an era of our existence when you'd wake up at dawn, burn 2000 calories before 11, eat lunch and nap for an hour then work off another 3000 calories before eating dinner at 5 and breaking even.
I'd be interested to see a version of this that excluded "dessert." Just because I suspect some folks might eat, say, KFC but never order dessert in an effort to be "healthy." It'd be interesting to know just how unhealthy it can get even if you skip the boston kreme donut or cheesecake or brownie on a stick or whatever.
I went to lunch with some work people, and a lady on the team got a dessert after that was a thick brownie with ice cream, chocolate syrup, nuts, and whipped cream on top, which she got with a coffee. When the waiter brought it, she asked for some sweet and low for the coffee and he burst out laughing (he quickly apologized).
What I'm getting out of this is that you have to eat a heavy meal and follow it up with dessert or something else full of sugar to hit that many calories.
When it's 1500 calories for one damn meal... Does 100 calories matter that much for something like an infographic? That's my entire daily calorie intake in one meal. If I ate that 3 times a day I'd be 600lbs. It's trying to demonstrate a point, that this is an unreasonable amount of calories for a single meal.
Also different countries use different ingredients for the same fast food joints so the calories could vary that way. Also x2 depending how long the person making the fries holds it in the deep fryer it could affect the calorie count based on that. Or whatever it is they are preparing.. the amount of sauce or mayo they put on a big Mac could be 100 calories difference, whether they added extra cream cheese or butter to your bagel, or poured more or less cream into your Starbucks latte.