So, after looking to find the best way of showing how dancing On1 is different from On2, I think I got it. Below are two video clips – one On1 (left) and one On2 (right). The lady dancing with these gentlemen is the same (so I can keep 1 variable constant in our experiment). I can also keep the same type of music, the same event, the same dancefloor static as well. In addition, they are also both performing very similar hand-flicking patterns, – so I will consider that not being different (or a changing variable). The only difference is that the guy on the left is dancing On1 with her, and the guy on the right is dancing On2. What you should be looking for is paying attention to the way the leads move in relation to the music. Look at their positioning, how much they travel, the smoothness, the speed and compactness. I will not say anything else except those variables to look for and hopefully you'll find the other ones. It will take a while for you to look at each video numerous times to start spotting the difference. Now, to be clear these are both amazing dancers – and it doesn't matter whether On1 or On2, they are practically doing the same advance moves and they all work out. The difference is that each of the moves will have a different feel to them, which is why On1 and On2 are different.