In practice you must work extremely hard on tumbling and stunting. Those are, after all, the required features if you want to win competitions. You are also expected to know more when you are on an all-star team. You should already know how to do jumps, motions, tumbling, standings, and stunts. You can work on all of these to improve and perfect them.
Male cheerleaders can make their mark on the all-star level.
They are respected on that level, probably more so than in high school. Uniforms also aren't restricted in all-star competition. They can use anything that gets the judges' attention. You cheer year 'round. There is no break in cheerleading if you are dedicated to it, even in the summer, where there's one major camp to attend.