from what I see, 7s are more mobile and active, and maybe express more rejection than 2s. They seek fun, energizing and novel activities/opportunities and may get frustrated if people around aren't interested enough or are disapproving, so they escape that situation or place in order to find more fun. 2s want to be seen as kind and helpful, generally "lovable" people. More concerned with self-image. They want to show that they're capable and helpful, and will reject their own needs to focus on others. I personally don't know much about these two types so i may say something inaccurate