Smaug vs Elsa version 1

I won't deny it; I'm a fan of Disney's Frozen.  I also loved how the did Smaug in the second Hobbit movie.  If Elsa has ice powers could freeze an entire kingdom and Smaug is an enormous (170m from my calculating) dragon with virtually indestructible hide and fire much hotter than normal, who would win in a fight?

Note: I plan on doing a more detailed version of this in the future and hopeful people will tell that the little figure is Elsa.

Elsa belongs to Disney
Smaug belongs to JRR Tolkien