Well then we can use other example.
I remember people saying oh let's not get so and so because we have mceachran, Bruma, piazon etc etc
If Ake, and Christensen are good they will make it with competitions on our team.
But we need this guy for the height. And not just buying because of height sake but because he's good!
Otherwise we should just get Peter Crouch, having a very physical player like VVD that is good is very hard to find.