Because Mass Effect makes so much more sense.
Sigh. Right, then.
My complaints about Tolkien's Arda - which are many, because it's fundamentally an uninteresting setting - have nothing to do with my overall unhappiness about the specific engagement at Pelennor Fields. Pelennor showed a minuscule - sub-10,000-man - army
annihilating one that was over fifty times its size. It is a military achievement that is effectively impossible. It has nothing to do with the fact that it's a fantasy world that features orcs, elves, goblins, giant fire-demons, a humongous evil eye, dragons, and so on. It has nothing to do with the existence of magic (since the armies of Man didn't need any magic to annihilate the quarter of a million-strong assorted forces of darkness in a single day). It's just stupid. In
Mass Effect, something that isn't even remotely comparable in terms of scope, the closest thing to that kind of slaughter - and it's not even close - is Shepard's ability to massacre her opponents across the galaxy, and, um, it's a friggin' video game.
I honestly liked the movie version slightly better, because although it employed some of the same tactical nonsense - lol charge at formed pike infantry backed up by archers lol - at least they could fall back on lolmagic and ghost warriors to explain the victory against overwhelming odds. That would have been happily internally consistent. Instead we have what's apparently an Age of Demigods that dwarfs the
Iliad.