I don't think any of them come close to 80....not even close. The one with his head down in px 3 is pretty good, but lacks mass and the cutters look small.
Here are a few of mine. The heavy one on the left in the picture with the two skulls scores 79 7/8 The other is 15 1/4 tall but will probably score around 76 or so. The antelope in the photo is the 15 incher. My talest to date but that heavy one was only 13 7/8 tall because of two broken ivories but scored better. You need to have mass and big prongs to score well
Mass and decent cutters are where you get a good score on antelope, much more than good length because there are four mass measurements taken on each horn.