Godzilla - 393 ft (119.8m). King Kong - 104 ft
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I got my money on Kong. Kong is extremely intelligent and has a better range of motion and agility compared to the slow lumbering Godzilla. Kong also is massive and can still throw down. In the trailer he also has a axe that can deflect Godzilla atomic breath which is his greatest strength.
GODZILLA. Because he can breath 900,000 cecluis degree radiation, he can cut with his spikes, and he can do a thermonuclear pulse. 1000000347...b58a41.jpg 
I'd say Godzilla because it looks a lot bigger and heavier
Godzilla, and here is why. Godzilla has radioactive breath, rows of razor sharp teeth, a punishing tail, and claws. While Kong is super strong and highly intelligent. Kong has to get in close to fight Godzilla to quote King Kong vs Godzilla "Its like fighting a flame thrower." So Kong is the under dog in this fight. I know he won in the old school movie only because they gave him the ability to draw strength from lightning. But either way as a life long fan of Godzilla movies I can't wait to see this movie.
The radioactive fire is true yes but its like a railgun it takes a long time to charge and it shoots straight. Its not like a gun where he can quickly track godzilla with it its one shot really fast forward and kong could jump out of the way.
