We can't all be good at everything. This is partly the logic behind having a team in the first place, so each role can be filled with the person best suited for that role and together, every job and every strength is covered.
In the marathon obstacle course of a career, it's just good to have all the stats on paper for why you're not only a team player but also why it makes sense to support you in the projects you want to do - because you've made so much damned money for the studio.