The photographer is at fault here. In attempting to capture the full glory of the moustache, the (presumably amateur) snapper has inadvertently drawn attention to Alan's ears. If he'd told Alan to rotate a few degrees, the ear asymmetry could've been hidden from view.
It's always worth sacrificing moustache clarity for ear symmetry, everyone knows that. There's even a rhyme that helps photographers remember this fact:
If the ears are out of line,
Don't assume it will be fine!
Tell the man to turn his head,
Or your shoot will sure be dead.