I don't think the title is incorrect. He makes the point that even a 10 calorie imbalance per day add up to 1kg of fat in a year, so these small differences are

I don't think the title is incorrect. He makes the point that even a 10 calorie imbalance per day add up to 1kg of fat in a year, so these small differences are important if you really try to tune your diet to exactly match some calorie count.