Wookies vs Predators.

Easy question just give me a reason why you choose them.

The wookies get massacred.

This is spite.

They slaughter then stuff the Wookies and mount them as trophies. 

 
I don't know why but the concept of Predators stuffing wookies comes off as hilarious to me.

Predators have them for dinner.

This is SO not fair. It's not like the Wookies are Ewoks and capable of mass destruction. XP
 
Seriously though. Predators win this easily.

Slaughterhouse.