So, people who enjoyed MoS "don't know characterization"? O-kay.
This is not War and Peace. Superman is not hard to understand.
This is nice and all, but you know what? Sometimes life does not WAIT for you to get experienced. There isn't a nice, gentle progression of events. Anyone with a job knows this! or dare I say, anyone with kids. There you are and life throws you to the wolves! Sink or swim! Fight or flight! And in this sense, this movie is very realistic.
Superman was completely inexperienced, and here come three people who are just as powerful as he is, with ill intentions. The miracle here is that MORE people and MORE property were not destroyed.
But you don't like this, because we didn't have a three-part miniseries where the first ten hours were devoted to his childhood, the second ten hours was related to him learning the ropes at the Daily Planet, then a bunch more talking and soul-searching and the last thirty minutes of the third ten hours was.... maaaaaay-be, devoted to Superman defeating his genocidal enemies, all three of whom wield the powers of gods btw.
I throw my hands into the air in sheer disbelief!
Did you ever consider that maybe in MoS 2 is where we are going to address the issue of Superman reassuring the people of earth that he is a benefit, not a liability to the planet? Everyone has emerged from a big shock, Superman and humans alike. Now is where proving himself will begin, I bet. Just give things a chance to develop!