Superman Returns made $200M+ domestically, was the 6th highest grossing film of 2006, and made more than Wolverine did 3 years earlier, which means it sold many more tickets. Just because it's budget was high doesn't mean a decent gross makes it a flop. I'm sure they wanted it to make a billion dollars, but close to $400M in 2006 was pretty good.
I explained Green Lantern in a post above. Still, it did gross over $100M. The poster's point was that flops of superhero movies happen, but they are rare.
Lone Ranger was a bad idea from the start - no name recognition with most of the movie-going audience, and your only star is unrecognizable? Plus, it's not a superhero movie.
After any salary raise, you will have less money at the end of the month than you did before.