
Milla Jovovich as Leeloo vs. Scarlett Johansson as Lucy.

If we talk looks I have to choose Scarlett she's way prettier in my view. And that voice. If we talk acting skills it's a tie. They are both average in the worst possible way. Nothing special about either of them. Then again not everyone can be a Natalie Portman, Jodie Foster or Meryl Streep. To name just a few very gifted actresses.
As far as the Movie goes: I'll definetly watch. Looks like an enjoyable evening to look forward to.