That would be an interesting number to see. I don't think it changes the potential for their frame at all just the amount of meat and fat on that frame. I guess what I am saying is a boar that has a huge frame is still going to get bigger than a barr with a smaller frame, some of the size is genetically predetermined. With a lack of hog on hog fighting you usually have large teeth (especially if the whetters were knocked out) wihch makes most hunters happy and the any additional weight is an added bonus. The table is where the biggest difference is noticed.
Why does it taste different? Same food sources, but eat more of it. But if they travel more or just as much as a regular boar I wouldn't think their would be a difference in.....?...tenderness? Lack of testosterone? Not debating, just thinking out loud. What is it that makes the difference?