Those guys outperform SFs with 15+ JS and 15+ Driving but low inside skills.
I did not see your edit until now but with this comment it seems to me we are saying the same thing.
First, you need jump shot on a SF. And of course you need both inside and outside d (I will leave the debate on which is more important for the moment, but suffice it to say that you need some of both). I don't think anyone can disagree with that.
After that, I don't think you can rank offensive skills on a SF (as some are trying to do). There are too many other things to consider. For example:
-are you playing with an inside, outside or neutral focus? Which flavour?
-how much you can afford to pay on the transfer list (or, if you are training him: how much time you can spend on his training plus his potential)?
-how much salary you can afford?
I will not disagree that inside shot helps for a SF. But the degree to which it helps depends on the offense you use. If I wanted to be a pure outside oriented team, I would not care as much about inside shot. For a motion offense I would focus mostly on handling and passing, with some emphasis on jump range. For a run and gun, mostly jump range, handling and driving, with less emphasis on passing. Although, the SF is slightly less important in a run and gun than he is in a motion.
Anyhow, that's my take. Feel free to disagree if you want.
Run of the Mill Canadian Manager