Earlier quoted context omitted.
From what I've seen 12 months pay in Germany is probably equivalent to 3.5 months pay in the US.
If you compare SF to any german city it may be that way, but the median salary (not only IT) is not that different(56k$ to 46k€ according to google). Remember that there are people outside IT/SV!
I look frequently, because if the pay was equal (or even 3/4) I'd love to live in Europe.