Gabriel had ben watching the short lived confrontation play out. If he had been in either of those guys' places, things might have gotten ugly quite quickly, especially if he felt that he was being challenged or insulted. Though he was waiting for a punch (or web ball) to be thrown, Gabriel shrugged and gave a slight nod when things simmered down. Being able to settle stupid, trivial things like what happened without brute force was admirable on its own.
Gabriel then managed to overhear the names of one of the kids down below him. "Parker", the name of the famous hero Spiderman, was familiar to almost everyone. It would be interesting to see how one of his children would adapt to their new status as a superhuman.