Going by their graph, you're more likely to make a 23 footer than a 4 footer. That's not adjusting for 3 points vs 2 points, it's actual shooting %.
So obviously, there's more to this than just shooting %. E.g. when you're shooting a 4 footer, it's probably because you have poor post position and are up against excellent defense. 29 and 30+ footers are also grossly distorted. A guy taking a 29 footer is probably taking a shot, whereas all the desparation heaves are in the last category.
Mind you, I'm not disagreeing with the data --it's great info and certainly correct for what it is.
Makes me wonder when some team is going to put a proximity reader on all it's players so they accurately record where shots are taken, as well as the circumstances (open/contested or off balance). Seems like that data would tell you exactly what the smartest shots are. I know they try and record that manually, but it seems like recording it would take it to another level. I know the pros look at % by distance and angle to try and make sure players get to their sweet spot.