Ah, I think I see the difference - for singles (class I) it gives you 43%, I mistakenly chose the married category (class III, in my mind that was the "default" tax class - probably cause that's how I have always filed in Germany), in which case the rate is 33%.
On 92,000 Euro I get 45% total. In California it’s 30%. Moreover, if you’re making $100,000, you’re almost certainly getting health insurance as part of the salary in California, so you don’t need to add the cost of health insurance on top of that.