Elsa would win because she has an army backing her up. She makes one phone call and here comes the Nazis to ruin the day, and saving her.
Marion would fight, but if she was so good, she would not have screamed at the dude who was shot in the head. She's a good fighter only when the odds are on her side, otherwise she just loses.
Willie would...do I really need to get into this. Well, now to think of it, she did put down some thuggees while Marion ran from some dudes in a hay cart and her would-be demise was a monkey.
The Verdict:
1. Elsa won with her army
2. Willie punched a few guys while making their heads blow up with her screaming.
3. Marion hit one guy, ran, and sucker punched him with a pan, all while screaming at one guy's bleeding nose.