I'm not so up-to-date with Basketball, but certainly in Soccer and Rugby you need both. You need the disciplined engine-room of the defence and centre-field to maintain control of the field and prevent concession. At the same time however you won't get anywhere without the big-name points-scorers.

Similarly, businesses need the sales guys to go out there and get the customers. But without disciplined design, engineering and maintenance you're going to end up leaking all your revenues in support costs, not to mention intangibles such as reputation.