Nutrients are present in all the fruits but in different quantities. Hence, it is essential to be aware of the nutritional value of fruits before we add them to our health routine. Banana vs Avocado Nutrition will help you choose the best fruit among the two. Carbs in Banana and Avocado are 22.80 g and 1.00 g respectively. The protein content of Banana and Avocado is 1.10 g and 2.00 g. Protein to carb ratio of any fruit must be approximately 1.34. Protein to carb ratio of Banana is 0.05 and in Avocado, it is 0.24. Nutritional value of fruits is incomparable to other food items. They provide all the vital nutrients required for proper functioning of our body.