Prince said that he was going vegetarian to lose weight (essentially trying to avoid eating himself out of the league like his dad did). That in itself tells me that he has absolutely no idea what he is doing. Calories are calories. Prince even admitted that he eats crappy overprocessed foods, only now he is trading beef patties for veggie burgers.
The fact that you try to throw animal protein in with HGH and steriods just shows that you are an ignorant idiot. Honestly, I dont give a crap if you are a vegetarian, vegan, fruitarian, or any other -an. That's your personal choice, but dont start badmouthing others without any evidence. The healthiest people in the world are not vegetarians, but those who get a variety of fruits, veggies, lean meat and fish, while avoiding overprocessed junk. There is plenty of overprocessed food that is completely vegetarian, that doesnt somehow make it better for you.
Michael Pollan's article on the complexity of modern eating problems explains just how messed up our diets have become. This article is lengthy, but it is required reading for those that want real evidence about nutrition and what went wrong in the Western relationship with food.