For an interesting primer on the case, google “ProArms podcast”. Their last episode was a recording of a press conference by Alan Gura and other principles in the case at the Shot Show from a few weeks ago. The audio is not the greatest, but it’s well worth the listen.
The problem with listening to one side’s argument is that the other side usually has very good arguments too.
Most SCOTUS cases gould go either way. That’s one of the importanmt reasons why they were awarded certiorari.