It was really more of the fact that in the movie battle, Voldermort would occassionally stop and punch/kick Harry, which made no sense, seeing as how Voldermort was wayyyyy past the "I'm going to toy with you before you die stage" and just wanted Harry dead. Which is why Voldermort just straight up AK'ed Harry in the forest. I understood it was drawn out for more action, but it just didn't really fit.
The Elder wand ownership thing is a good point, though still, Harry never would have had a climatic, drawn out battle in that case, because the Elder wand shouldn't have worked against him. And it was working against him in the film battle.
Basically, they made Voldermot attack Harry with non-leathal spells in the film for a while to draw out the action. Which I understood, but I thought was a bit silly. And not in keeping with Voldermort's character. But it is what it is.
In terms of Aragorn, I understand the reason he charged the Orcs, it was the fact that he actually held off about thirty of them by himself that made me roll my eyes. But it's a movie, and a fantasy at that, so it's not like it ruined anything for me. It just was one of those, "oh, lets watch one of the heroes take out fifty minions just because he's that amazing" moments.