My folks once had a 1400 pound domestic boar.
I find it very hard to believe that a wild hog could grow that large. I'd have to see a lot more pictures and maybe some video footage. I once caught a 5 pound catfish and dangled it from a tree with fishing line. Then got back about 20 feet with a rope over my shoulder and lined it up and took the picture. Presto!!!! instant 100 pound catfish
That hog won't go over 700 pounds. I have seen an 1100 pound hog and it could eat that one. They can get that big in the wild if the conditions are right, but that is certainly not the norm. The 1100 pounder had been slipping into a 200 acre peanut field at night, and they finally got him.