A few percentage points matters a lot. Guys like Kobe Bryant/Paul Pierce/Korver/etc. will shoot 43-45% on those shots all the time.
In the past 4 seasons, from 10-23 feet:
Paul Pierce: 44.4%, 39.6%, 45.6%, 36.6%
Kobe Bryant: 43.0% 45.4%, 42.9%, 41.0%
Kyle Korver: 47.7%, 47.8%, 46.3%, 40.1%
Dwyane Wade: 43.3%, 35.8%, 37.3%, 38.1%
Ray Allen: 48.6%, 48.5%, 47.9%, 38.7%
Andre Iguodala: 36.1%, 37.8%, 36.3%, 35.0%
Monta Ellis: 35.8%, 38.2%, 37.6%, 40.3%
Eric Gordon: 41.6%, 34.5% 39.6% 41.9%
Chris Paul: 45.3% 48.5% 45.0% 47.7%
Russell Westbrook: 36.5%, 35.9%, 36.8%, 42.1%
Deron Williams: 47.5%, 41.8%, 42.5%, 40.2%
Rudy Gay: 41.3%, 42.2%, 42.4%, 39.2%
Joe Johnson: 39.2%, 40.9%, 37.6%, 41.0%