Hey
Maybe I can help you out a little bit here, since I am that only one team who has played an outside tactic in B3 Knockout so far.
In my case, I only have one player with good JR, but everyone in my S5 has pretty decent JR, even at the C position. But as far as I've learned, there are many factors that have an influence on how the game goes and who takes which shot. It's not just JR of your two guards, but it's also their DR, PA and HA as well as other players DR, PA and HA. Of course the opponents team players are also taken into consideration. Therefore it's difficult to tell anything just based on the team stats, because some skills are not really taken into team stats and yet they still matter. (i.e. my SG has good rebounding, the team stats don't really improve because of that, but he still gets lots of Rebounds, sometimes even as much as my big guys. Of course the big guys get a few rebounds less in the end because of that, but it's still worth it).
All in all I would say, that the difference between inside and outside are not that big anymore, but the skills of your players (of all 5!!!) need to be in a good relation to each other.
The overall shooting is really a bit low though (inside and outside). But I guess that's just because everyone trains ID and OD. In RL you have some bad defenders, just because they are not that talented there. In BB you don't have players with OD let's say 7-10, because it's just a killer. You can't have someone who is offensively that good to make up a bad defence, that's the difference.
Where I absolutely 100% agree is the fact with the contested vs free shots. I'd have rather my C take a contested shot then my SG a free one, which is completely unrealistic and utter nonsense.
But after all I'd say that outside tactics have gotten more interesting again in the last 2-3 seasons, as long as you are tactically flexible and not bound to always play outside. I'd still rather always play inside than always play outside, but being tactically flexible is a plus again (which was not the case 5 seasons ago).