That mulie was killed a couple of days after those photos. He was fat. He just was short and squatty and never saw 200 lbs live weight in his life.
Some deer loose a lot of weight in the rut and others not as much. Just the same as some bucks can loose a lot of weight in the first two weeks of the rut and look like a shell of what they did before that time. 20% is not uncommon and have heard of 25% loss of body weight in the rut type numbers thrown out. The better the year the more weight they can loose also.
Here is a pic of a 258 lb live weight buck. You know firsthand how tall all that area is in the dock area of the cleaning room. This buck was very long bodied but with that large shoulder/neck size it made him look squatty. He had the largest neck at the base of his jaw of any buck ever taken on this ranch.