Godzilla and Cloverfield vs. The Autobots
Easily said.
Godzilla ('98):
and the Cloverfield monster:
versus
The Autobots from the first Transformers film:
Optimus Prime, Iron Hide, Ratchet, Jazz, and Bumblebee.
The creatures have their size, strength, bodily functions (breath spray), and, of course, their intimidation factor. Their sheer size being a plus.
The robots have alien technology and maneuverability. Their technology being a plus, but are significantly smaller.
Who takes it?