I don't think film was realistic.
After careful examination, I believe that it should be noted these events possibly didn't take place as expressed in the film.
I find some of what is in the film highly improbable.
1. The wagon of dead men. Now come on. These weren't expert mechanics. The wheels would've fallen off if that wagon was really that full, going over the ground.
2. The cow being catapulted would have spiraled with the udder utterly up at 45% degrees as we have demonstrated in our own tests where we catapulted living cows and a control group of men in cow suits.
3. The Camelot song where the helmets were drummed on would have made a duller pitch sound in the resonance of the chambers.
4. In order for the rabbit to be a monster, he would have had to be in an area where nuclear tests had been done, and Merlin, the only one capable of doing so, had never been in that area.
5. When the black knight loses his arms and legs, and his unbandaged torso is on the ground, it would cause abrasions which would react on the nervous system to make him topple over.
6. The knight spokesman of those who say "Ni" could not have a herring in his hand while accepting a shrubbery.
7. The French taunters could not possibly have smelled the king's father.
8. Galahad would have fought harder to stay in the castle of Zook .
I'm sorry, but I'm afraid we're left with a less than believable story here. This work was "Fiction". Do not believe very much of it.
Now go away or I shall taunt you a second time