You could say that bananas are the most popular tropical fruit in America too, much cheaper and therefore more popular than mangoes or papaya.
In general, more color = more nutrition, so berries are definitely better, but you have to go with what you have. Are frozen berries available? I would guess not. In America, we hear a lot of stories about power outages in India. Not good for frozen food.
Last month I took out the greek yogurt from my smoothie and replaced it with a bit of banana. That allowed me to transfer my dairy cheat to tea and coffee, and it decreased those weird toe cramps caused by potassium deficiency.
5'0" female, 45 years old. Started Primal October 31, 2011, at a skinny fat 111.5 lbs. Low weight: 99.5 lb on a fast. Gained back to 115(!) on SAD chocolate, potato chips, and stress. Currently 111.