Spanish horses do tend to have big necks and add in the hormones and you can end up with something like this.
I dont find it overly attractive and I dont like his neck position in the photos (and I'm an iberian lover so that says a lot!)
yeah its breeding plus i think he's carrying a bit too much weight. I don't think our dressage outline suits them as we're a bit fixated on the head whereas if you see the same breed in "classical equitation" springing through and truly colleceted with the nose just in front of the vertical they don't look as cresty