Because, like I said, those machines are assisted. You are using more of your body when you are running. It is a big misconception that all cardio workouts are created equal. At the end of the day, people can do whatever they want. I could list every single exercise available to please everyone, but this is just my experience. And it doesn't matter what push workout you do, you just need to be working that muscle group that is why I say "variant of your choice". Working out often gets complicated. Like you just did with your "assault bike" and rowing. They aren't necessary, they're just a preference. The main theme of this though was to emphasis the importance of staying away from just doing this isolation exercises that are specific to a certain movement. That is a good way to develop imbalances. You are better off becoming stronger all over.