Because he's coming back from a lower leg injury, that's why you'll notice ALL of his shots are ending up a bit short. Should improve fairly quickly as he gets his legs back under him.
Westbrook averages 10 APG for multiple years. He's a bad playmaker. The type of playmakers similar to Westbrook, Lance Stephenson, etc are guys that try to go 1-on-1 first and if they don't get a good look sometimes it will cause the defense to help which opens up a player. KPJ is a playmaking SG/SF, he's not a real PG.