I think maybe one problem with the 72-4 is the body color on the header panel, if you noticed Goody's dad's was painted a dark argent & it seemed to soften the appearance of the front.
The header panel on the '72-'74 Challengers is pushed forward as compared to a '70, so it has a sort of "in your face, look at me" deal going. It sort of reminds me of what they did with the Charger 500 vs a regular '69 Charger to a small extent, IMO. Also the head light bezels stick out, as opposed to a '70 where they look more flush to the grill.
If you look at this pic that Hopalong posted in another post, the headlight bezels look more flush to the header and the trim on the grill is removed, giving the front end a flatter, less noticeable look.