Mura, about your video, I thought it was well structured, but I don't agree with you wholehartedly.
First off, let me say that I am 100% behind you in saying that the sawed-off takes less effort and in relation to that takes less skill by our community's definition.
With that said, I don't agree with you that it isn't overpowered.
Have you ever played an experienced player who uses the sawed off like a gears 1 gnasher? They wallbounce to you, but in the end don't have to line up their shots. The experienced players can blast through even the best players when using the sawed-off.
The only reason I think you haven't concluded that it is overpowered is because the sawed off users you see either flank or camp.
Those rare, good sawed-off users demonstrate just how "Overpowered" that gun is. It will centralize execution to no end. When you have respawns, killing more than one person without effort is an issue, but in a game mode like execution, the sawed-off will dominate the game with its simplicity.
That warrants the title of overpowered.