50% less than SV in Zürich? You're greatly mistaken. Last I checked I'm paid more here than what I would get if I were to do the same job in Mountain View.
for me it's 1:1, depends on after-tax money (which is real salary, anything else are just some imaginary numbers).
now go out for a dinner, go get car repaired, try to buy house in countryside and we can talk about comparable