How should I write a fanfic between Marvel and DC characters boxing eachother?

I'm writing a fanfic about various characters of Marvel and DC fighting eachother in boxing, and this is a pet project of mine, and I've kind of always wanted to do, since I have a friend, who I request boxing pictures from, and some of his boxing pictures, that I've requested from him, have been about characters with superstrength, duking it out in the boxing ring.

I find the concept of characters with superstrength boxing eachother very interesting, as a boxing match like with characters like Hercules and Hulk boxing eachother, mixes the over-the-top nature of wrestling, with the rough and tumble nature of boxing.

I'm writing a fanfic, my fanfic can be planned here:

https://www.fanfiction.net/s/12209022/2/Smackdown-of-Gloves

And I plan to write it soon, but I'm kind of nervous about how to write it. Who do you think would win, and how much pre-fighting scenes should be included?

You should read Marvel Two-in-One Annual #7 for a great example of a superhuman boxing match.

Watch Hajime no Ippo. It is one of the highest-rated anime of all time for a reason. It follows the story of high school student Makunouchi Ippo, as he begins his career in boxing and over time obtains many titles and defeats various opponents.

Many of the styles and techniques are based on boxing legends, like Jack Dempsey, Mike Tyson, etc.