My wife and I used to have a rottie that was great, medium size, about 90lb.
Neighbor had a shepherd from Europe breeder, I think he paid like 3-4K for it in the late 1990s.
The pups would play together and the shepherd would put its mouth around the rottie's head. The whole thing.
I am sure the rottie would win in a bite strength competition, blah blah blah...the shepherd woulda won every other fight.
My roommate in college had a few rotties and bred them to help pay the bills. We would take four or five puppies to Landis Green and let them run around. They were like little snatch magnets. Good times.