What a Superlock door is
Superlock is a category of multi-point steel security door, standard in Israeli and European apartment construction and increasingly specified in Vancouver renovations. The door body is steel rather than timber, a locking bar throws several bolts into the frame at once, and the cylinder is a restricted high-security unit rather than the builder hardware it replaces.
The point is that it is one engineered assembly. A normal exterior door fails at whichever part is weakest, usually the jamb beside the strike. On a multi-point steel door there is no single point to attack: the bolts are spread top to bottom, the bar rides inside the door body where a pry bar cannot reach it, and the frame is steel and welded at the strike and hinge positions.
It is not the right answer for most doors. It is the right answer for a specific set: penthouse and ground-floor suites with a history, properties with a documented threat, storage and collection rooms, and renovations where the owner wants commercial resistance behind a residential finish.