spoiler free, just an opinion

Rating: 10/10 (23 March 2016)

The reviews that you may or may not be getting some concern from are not from fans. Are not form people whom have been following (the comics) or have any deep understatement of the story lines and/or the characters.
Superman has been portrayed fairly and accurate. Batman finally gets to kick ass like we know that he can and does regularly.
I understand your concerns about this one if your mind is still thinking on MOS. Superman is not a boy scout he can crush you in a half a second anyone would have problems in controlling that kind of power and in MOS and in this one, they didn't forget about his struggles and ramifications of his previous actions.
Wonder Woman was done justice and this truly is the dawn of Justice.
Watch this one don't let the opinions of people who are clearly biased kill your excitement and curiosity.
It's a good movie, a great experiment and it is what a film should be. It tells a good story it has layers ( which are very , extremely important in a story) you'll get to know new characters whom for the audience in general are completely unknown, therefore you'll get to experiment new stories, new powers, new motives, new scenarios and it build the hype for justice league.
Clear your mind, enjoy the popcorn, the experience and screw whoever tries to take that away from you.