To the commenters who responded to me:

Yes, the juice does not contain mostly pomegranate, but the box says "juice blend". I have never tried to drink pure pomegranate juice, but I assume that the taste would be too strong on its own. As I stated in my comment, the bitterness from pomegranate and blueberry juice is masked with sugar and water, but still has a strong enough flavor of pomegranate.