That traditional bangladeshi meal doesn't sound like it's loaded with sugar like a lot of starbucks and mcdonalds, which is one distinct difference. another major difference is that the traditional bangladeshi meal sounds full of fiber and nutrients, which is also very different from a lot of starbucks and mcdonalds food.
If you're a robot with 100% dietary discipline, yes you can maintain the same weight whether you're eating purely lettuce, potato chips, or curry. But the average human will have a harder time sticking to their proper calories if they subsist on high-sugar, low-fiber, low-nutrient fast food compared to bangladeshi curry. I'm not talking about theory, I'm talking about real-life humans, and as evidence for my statement you can read the wikipedia page I linked containing data about the prevalence of overweightness and obesity in the US.
If you're a robot with 100% dietary discipline, yes you can maintain the same weight whether you're eating purely lettuce, potato chips, or curry. But the average human will have a harder time sticking to their proper calories if they subsist on high-sugar, low-fiber, low-nutrient fast food compared to bangladeshi curry. I'm not talking about theory, I'm talking about real-life humans, and as evidence for my statement you can read the wikipedia page I linked containing data about the prevalence of overweightness and obesity in the US.