That may be true^^, but I look at just the bone structure and body type. Their appearance can be changed so much by good feed and steady work.
This is so absolutely true. When I first got my mustang as a 3 year old he was the ugliest little thing (I wish I could find some pictures!). He was small and scrawny with ears way to big for his head and feet way to huge for his body. He honestly looked like a dark gray mule gone wrong, but after a bit of groceries, a bit more muscle and after he grew into himself I have to say he's a very handsome horse.
I must be one of the lucky ones then because I have never laid eyes on an ugly mustang. They have all been hardy little horses. Maybe not over the top flashy or pretty but there was no denying it that they'd hold up under years of work.