You know who Harry looks like, I mean really really looks like? He looks like Harry.
This seems to be done so much more for Harry than any other royal, is it a hang up because of the stories about whoever it was with red hair that people speculated was his father? People desperate to "prove" something? I honestly think there is some of that in there because you just don't hear it much about the others and if it is that I think it is so unnecessary and would be hurtful if he knew about it, I'm sure he has other things to do but if he did happen to hear it. Just leave him alone, he is Harry.