In Banjevic last two "shooting-bonanzas" you are meeting a better opponent, with you running Outside Isolation/patient offense.
In Patient his opponent is the weakest opponent and your team exploits that (to no prevail)
and in the last game you run outside isolation, your SG sucks so your SF takes the majorities of shots, against a good defender, hence the poor shooting%
Take away those two blowoutgames and your player is shooting .415, not too shabby for a SF.
All I am saying you have to factor in a bunch of stuff, not just JS and JR.