Those charts show the US has a significantly higher percentage of immigrants and foreign population (whatever that means) than the UK. Did you actually read them?

So you wield your epee or saber two-handed eh?

Lightsaber fighting (in the movies) was based on Kendo. Not Western fencing styles.

Mark Hamil got Kendo lessons in preparation for this.

It's not the same software.

When you change the insides, nobody notices

Newer versions of "Calc" were completely written behind the scenes to provide more accuracy (essentially infinite accuracy on simple arithmetic, explained above) while the interface remained the same. So the comparison is flawed.