The stats of the end of the match are clearly saying that I am mostly more skilled than my mates. I'm leader in terms of overall points as well as k/d.
Those stats don't really corrolate to skill on their own. You could be killing the easiest marks repeatedly, while the actual threats are crushing your teammates. You could be engaged in simple ink trades, or painting easily reclaimed turf.
Stats also don't take pure support roles into account. You can be a spotter, or a path maker, or you can sneak into vital areas and get people to super jump to you, or you can hold off key opponents in a protracted stalemate. None of those things translate into any direct score that the game will attribute to you, but they are absolutely legitimate roles you can play.
I play a charger, and whenever I lose and have a higher ink score than my teammates, I know I messed up royally. Because I was chasing points, I wasn't supporting my team, and they lost.
tldr: Proper team play is all about synergistic contributions, and that stuff isn't really tracked via stats.