Ryujin
Legend
I'm not disputing your point, but I do want to point out that, in The Hobbit, the Battle of the Five Armies mostly takes place off-screen, as it were; the protagonist (whom the narrative is following) spends most of it knocked out. That was a deliberate choice on the part of the author.
I was thinking the same thing. The big battle starts. Bilbo gets whacked on the head. Fade to black and wake up to a decimated battlefield. The movie added a bunch of frequently violent intervals that didn't exist in the book, purely for the OMG factor.