Why are other B grade historical exploitation movies viewed as inaccurate and far-fetched, but...

Time, place, production esteem & cost, cast.

Both of these films were heavily advertised/print & television. I remember it vividly, and there wasn't even a blip of resistance. Not a peep. People flocked to it. And at that time there were a lot of novels published, racy ones corresponding to this particular genre.