Look: this movie is probably gonna be a hot mess. It’s Paul W.S. Anderson taking on a Capcom video game again, and we’ve just gotta hope it’s a Resident Evil: Retribution hot mess rather than a Resident Evil: The Final Chapter hot mess. But, I will say this: that sword continues to look great.
Realism in science fiction movies can be a tricky thing to navigate, especially if that's what the creators are aiming for. In a lot of films, scientific accuracy is often sacrificed in order to tell a more interesting story.