The same kind of dogs work well on hogs. Hogs are very intelligent and learn very quick, if they stand still the dogs won't be trying to bite and grab, but will put the ivory to them if they act like they won't to leave. What if someone had a sharp object and punch you in the rear all the time, no matter what you did, how long would you stay there and take it. What if the same sharp object was used only when you tried to leave and they poked you in the chest and left you alone when you were still. It wouldn't take me long to park it. I will agree that hog hunting is more forgiving to dogs that are real rough.
Reading the scene....
I was at a baying contest and at the end they turned in 4 Catahoula pups on a good sized boar...I could tell these were rough 6-7 month pups...what I was reading before my eyes was that the boar was reading the pups...he knew if he ran the pups were going to catch him...so very carefully he sat down and the pups just bayed...I very clearly saw what and why the Hog chose not to run...and I clearly saw what the pups would have done if the Hog decided to run...
Bigo...you are right on...that level of performance rides a fine line...