nor made some aspects of Pelenor Fields cartoon-like in tone
And made the Pelennor Fields themselves a huge grassy plain. Sure, that's going to feed a city. Or were the Gondorians a species of horse that had the ability to take on human form, like the one in Monkey?
It might seem a trivial point, but it added to several others to give a sense that Jackson didn't really care about realism. It goes along with something else in modern cinema: violence is made much more spectacular, but hits less hard because it obviously couldn't happen like that. And no one cares but me. But when I'm God-Emperor, they'll care. Oh yes, they'll care...