They are, yes. There's no magic to a balanced cable, it's exactly the same as an unbalanced cable in terms of the construction, both have four wires, two to each cup. The balanced cable just has each of the four wires connected to a discrete terminal in the amp jack end, while an unbalanced cable joins the return from both L and R to a common ground in the jack.
It's theoretically possible for an unbalanced headphone cable to do the split in the Y-splitter, and have only three wires from the jack to the Y-split and then split it there into two to each cup with a common ground but as
@KenTajalli says this is extremely rare, the vast majority of regular SE cables to dual cup input headphones run four wires from both cups and join in the jacks. It's easier to do it that way, it adds complexity to try to do it in the Y-split.
Cables are not an inherently complicated or expensive thing, they are made so only through marketing and snake oil nonsense. I do not believe in any of this stuff about magic differences from cables. IMO, these two cables both sound fine and both sound the same as the stock cable, if adapted to SE as I do with my desktop amp- I have them balanced so I can use them on portable devices with better and higher power balanced outputs. I know Ken has a different view on this, I do not hear a difference personally.
Balanced isn't inherently better or necessary, either. But what can be the case and is quite common is that specific devices, if they have both, often do perform better out of their balanced outputs, often they have more power and lower noise and distortion. Not always- but it's common. So if you do have a source device that has a better balanced output, it makes sense to use a balanced cable. This does depend on the device, some devices have the same power out of SE and balanced and some the balanced may even measure worse. But more commonly, if it has both, the balanced is often a bit better, and I know on the specific devices I have (Fiio BTR5 and Qudelix 5K) that is the case.