People do understand that Unalaq is an AVATAR right? unless we're talking about non avatar state in which case, Ghazan wins.
Lets assume they're fighting somwhere Unalaq has constant access to water just so the odds are fair. ghazan can still just sink unalaq in a pool of lava and there isn't much he can do about it since lava beats water; its simply too hot. and the kicker is that ghazan can make as much as he wants. There is literally no limit to the destructive capabilities of a lavabender. he easily took down a millenia-old temple in minutes.
Now if they were in the tundra at night, we know who wins
