Superman's place in the DC universe has always been (throughout most of the character's published and adapted life) that of the most powerful superhero. Pick up any issue of Justice League of America (1960-87), or recall his speech to Darkseid in the Justice League Unlimited series finale, "Destroyer," where he gives the best explanation of his ability and how its used with the "Me? I've got a different problem..." lines. He holds back most of the time, but there is a point where he can finally let loose. The finales of the JL movie and the JLU cartoon were examples of that. If unimaginable power is required, he's got it and will use it, but that does not make the other characters (e.g., Batman) appear weak, or as you put it, like amateurs, as each has their own unique purpose to serve in ways Superman cannot, or can hold their own. That's how a superhero universe is successfully laid out where the supreme power is great, but is not always outclassing those who are not enhanced.