You have a photo to compare on his user icon. See how it flows around the back of his head, rather than fall down the sides in two even rows? See also how the hair parts to form two distinct curves at the top of his forehead rather than recede back into a straight line at a level even with his ears? These are important details.
In the actual cartoon, South Park Jesus' hair falls over his shoulders, which is what creates the look they abstracted into that line. That's important. Without the shoulders obscuring your view, the information conveyed is completely different. You might be able to get away with the hair falling behind the shoulders, or ending just above them, but this particular image has no such correlation.
The so-called jesus look shows us a balding man with girly pigtails. My way shows a man with long hair parted down the middle. One of those descriptions matches Kurt (and Jesus) better than the other, so I'm going to respectfully submit that you're just plain wrong
Yes, the cartoon hair is more full and lustrous than his real hair, but in proportion with his cartoon head.
It really is closer than the jesus hair, and by a wide margin.
I tweak proportions to help you visualize the difference:
Obviously, it's no longer South Park.
In any event, it's the tunic that's confusing you. The closest selectable color was vaguely feminine, and the bulky jacket shape obfuscates gender clues. Your gut feeling says to compensate by removing feminine qualities in the hair, but what's needed is to add masculine details throughout.
I went with strong shoulders and a somewhat concave torso to emphasize the absence of feminine curves. Also, having individual legs signals that these are pants he's wearing, rather than a blue dress. And note again how shapely the hips aren't.
These are subtle things, but he's definitely male now, and I didn't have to change the tunic's color, or his hair. In fact, I deliberately made the hair girlier than ever to show that it doesn't matter once the details add up.** sigh **
The irony, of course, is that I went through all this trouble because Kurt's version was grating on my nerves and I never wanted to see it again. By speaking up, I condemned myself to many long hours of staring at it.