I've never seen a management role as something related to individual performance. I think it's rather clear that a one person team won't work better with additi

I've never seen a management role as something related to individual performance. I think it's rather clear that a one person team won't work better with additional manager. On average though you won't get uniform team nor a team that gets along well. And even if you do, it has its own dangers. Manager is there to make sure things happen even when people disagree on them, and to make sure the best option wins any argument, not just the loudest. It's really often like juggling with dogs and cats. That are on fire.