Cieslak is a cruiser, so there is no doubt that Zurdo is moving to cruiser. I don't know if it'll be much of an upset. Cruisers are big guys and Zurdo won't be able to use his size advantage anymore.
Zurdo needs to move to a shack outside of Mexico City and start breathing boxing. He has 3-4 years left in the sport and a lifetime to try to be a cool guy in LA.