I mean, yeah, ok, that is pretty phenomenal, and I'm not at that level yet. But I actually don't think that level of detail is necessarily something they're looking for, though it might sway the community voters. Since they linked their new battlenet profile pages as the example of where these portraits will be used, having them look good at small resolution as well (like ~80px) should be as important as having them look good close up.
I mean... that guy's also looks fantastic small... but slightly less intimidating/unachievable... slightly.