Yeah, you miss the fact that you will never fly 45 sectors a month and 17 days a month, unless you want to run out of hours in october.
The average leg in my time in wizz was around 2,5 hours, you do the math.
And I dont remember the basic salary being more than 2000 eur, by the way.
As it was said already, the figures and pay structure change slightly from country to country, but dont expect anything close to the numbers you mention.
After the type deduction, on a local contract with 10% social security and little to nothing swiss income taxes you can expect as sfo a little less than 3000 a month.
At that point depending on your country of residence, your tax treaty and your lets say fiscal responsability, you might have to pay some income taxes there as well.