Princess Bride swordfight banter: accurate or Hollywood crap?

The greatest swordfight of modern times was, in fact, mostly Hollywood crap, to wit:

             You're using Bonetti's defense
             against me, ah?
31. MAN IN BLACK I thought it fitting, considering the rocky terrain -- INIGO Naturally, you must expect me to attack with Capo Ferro. And he shifts his style now. MAN IN BLACK (coping as best he can) -- naturally -- (suddenly shifting again) --but I find Thibault cancels out Capo Ferro, don't you? The Man In Black is now perched at the edge of the elevated castle ruin. No where to go, he jumps to the sand. Inigo stares down at him. INIGO Unless the enemy has studied his Agrippa- And now, with the grace of an Olympian, Inigo flies off the perch, somersaults clean over the Man In Black's head, and lands facing his opponent. INIGO -- which I have.

ALTHOUGH William Goldman is purported to have been familiar with Aylward’s The English Master of Arms, and the names used above are those of actual swordsmen, according to this dude.