But the ratio favors "Inside Shots" over jumpers. Why in the world would you want a 15+ JS/1-6 IS PG if you're running Look Inside?? That's stupid. If you want to utilize a PG on offense with jump shots, then you switch to a Run n' Gun or a Princeton. The fact that everyone here keeps boasting a higher JS on a pure LI PG is just downright nonsense.
If you had to trade off a bunch of other skills for the JS, it's not worth it. But JS is almost free salary wise on PGs. Guards will take jump shots in LI, and JS also boosts ability to hit inside shots (per a large analytical study). There's no reason not to have it.
You don't "need" JS on a LI PG. That doesn't mean more isn't better.