Tyramisu
The comment about western swords really got to me for a minute as most western swords are less than a kilogram and extremely well balanced, there are katanas that are heavier and balanced worse than that, so the type of sword only has an influence with fighting styles. Katanas are more about cutting and deflecting while 'western swords' are more for parrying.
Katana were probably the hardest swords in the ancient world, but they were also brittle compared to other blades. Katana would hold up to cutting soft objects with little wear, but over time, the compressive force from hitting hard objects could lead to chips and cracks. European swords were not as hard as katana, but they could withstand more punishment, at least in a different way. For example, the Toledo blades of Spain were so durable that they were tested by being bent into “S” shapes and semicircles and then banged at full force against steel helmets. Even if you take all the merits of Japanese swords and compare them with swords from other countries, it’s difficult to name a “best” sword because each was made with a specific type of fighting in mind. For example, European swords were made to strike against full armor and shields, so they needed to withstand a lot of punishment. But Japanese warriors usually launched preemptive attacks to limit the wear on their blades. Still, while comparing one kind of sword to another is like comparing apples and oranges, every side has its fierce supporters, many of whom are smiths showcasing their own wares. source, https://listverse.com/2015/11/12/10-revealing-facts-about-the-katana/