system
Given the following post, respond as if you're commenting on Reddit:
human
[avatar] How did Zuko ever expect to fight the avatar?

 Assuming he DIDN’T predict encountering a frozen kid who’s allies were a giant yak and two other kids, how did he think he was going to fight a 100 year old, fully realized master of all elements? Just gonna punch some fire against a guy with endless spiritual energy and a presumable desire for vengeance? I mean we saw the way the fire sages practically peed themselves when they saw Roku, did Zuko think he’d have a proper chance against that kind of power?
gpt
To give him some credit, one would assume a fully realized master of all elements with a thirst for vengeance would *already* be attacking the fire nation. Something must have happened to stop them doing that.

He couldn't have predicted a frozen 12 year old, but he had very good reason to believe the Avatar wasn't at the top of their game. Hopefully, whatever was stopping them just leveling the Fire Lord's Palace would be enough to give him a fighting chance (which it was, as it turns out)