In a nutritional comparison, McDonald's Happy Meal Hamburger with Apple Slices offers a more balanced meal, providing protein from the hamburger, fiber from the apple slices, and fewer calories compared to Burger King's Chicken Fries 9 pc. While the Chicken Fries offer a higher protein content, they are also higher in fat and sodium. Both meals may not meet the nutritional guidelines for a balanced meal, but the McDonald's option seems to be a slightly healthier choice. It's essential to consider portion sizes and pair these meals with fruits, vegetables, and water for a more balanced diet.