Now whether or not this is going to cause you problems in the future is difficult to say, it's going to be something you will just have to keep an eye on.
x2.. I have two oscars as well. The smaller one is the bully. It's been like that since I bought them 4 months ago. The smaller one always gets the territory he wants. But now, the bigger one stands up to him. He now fights back when the smaller one provokes him. So now they're somehow balanced. They still fight though, but no serious injuries. I barely see them lip-locking anymore.