Which female athlete or celebrity do you think is physically stronger?

Looking at the physique and how they train for their sports or films who do you think will win a physical battle like while wrestling or arm wrestling (without any punches or kicks) and who will come last.
Also give your reasons.
Rhonda Rousey
Hilary Duff
Serena Williams
Maria Sharapova
Kaley Cuoco
Chloe Grace Moretz
Demi Lovato
Select gender and age to cast your vote:
Which female athlete or celebrity do you think is physically stronger?
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