The childcare figures are actually pretty in-line.
In our area (bay area suburbs), daycare for a 2-year-old is around $2000 a month excluding any extra babysitting. Preschool for a 4-year-old is around ~$1800. I can see how within SF proper they might be higher.
The $1200/month for entertainment/clothes/charity do seem a bit much if they leave you with a net cashflow of only $100/month.