It really depends whether we are talking about a hypothetical real fight, or a purely fictional one. For those who may not know, Laura is a second-degree black belt in karate, so in a real fight I don't think Kaley would stand a chance.
To make it a bit more competitive, I'd like to think of this as submissions only type of fight, where kicks and blows would not be allowed. That would give Kaley a fighting chance.
I like them both, but my vote went to Laura.