If I may nerd out about hacksaws for a bit — Some disadvantages of that type, compared to the Sandvik, as I see 'em:

1. Doesn't get the blade as tight. See how the pivot is halfway between the tensioning rod and the blade? so the tensions are equal, can't get the blade tighter than the rod, which tightens with a coarse thread and that smallish knob. Sandvik has leverage to make the blade tighter than the tension on the tightening screw, plus it's a finer thread which is like "low gear", and a knob that's easier to put torque on.
2. Stanley has loose, separate pins to capture the holes in the blade, that have to come out to replace the blade, and which can get lost. The one in Andy's photo has lost one of its pins. Blades just "fall on" to the fixed pins on a Sandvik, which cannot come out. Faster blade changes too.
3. I believe the Stanley can't take more than one blade, correct me if wrong. I have used 3 blades ganged up on a Sandvik a few times, a good ability to have in some situations.
4. Sandvik has another mounting position that holds the blade on a 45° angle that allows you to saw right flush to a surface (floor, wall etc.). I don't use it much but when you need it, it's brilliant. Example: one shop I worked at had a hole in the floor sized to fit a Pletscher kickstand. You'd mount the new, full-length KS on the bike, put the end in the hole and have a helper hold the bike at the desired lean angle while you saw off the end flush with the floor. Took two people but only a minute or less. Not possible with the Stanley, your knuckles would be dragging on the floor to even get close to flush, but you can never get the cut exactly right.
5. Blade storage in the backbone, not looking at it now but I think ten blades fit easily, probably more. Keep a selection of blade types there so you never have to go hunting for the right blade, or just a fresh one.
6. Blade inside the backbone, extended out some random distance of your choice, for sawing down into a hole when you can't hold both ends of the blade because a frame wouldn't fit. Pro tip: mount the blade with teeth pointing to cut on the pull stroke, keeps the blade straighter when it's unsupported at the end. You can buy a handle made for this type of blind-hole sawing, but the Sandvik is as good or better than those, and it's right there in your hands already. 10-second job to extend one of the stored blades and lock it in place.
7. No plastic. Plastic handles on Stanleys often break, as seen in Andy's pic. That one's not bad (yet) but I've seen 'em with the plastic handles completely gone.
8. From Sweden with Love! OK not really an advantage but it reminds me of the '70s Crescent ads with the very attractive model. That makes me happy. "Crescent Girl" must be in her '70s now, I hope life has been good to her.