So, one thing you have to be careful of here. Germany is one of the few countries where defined benefit pensions (that is, pensions where your pension is a fraction of final salary or similar) are still common; in most developed countries, including the US, peoples' pensions are far more likely to be some sort of tax-advantaged investment, which they probably have restricted access to pre-retirement, which their employer may contribute to or may be required to contribute to, and so on.
The latter is clearly wealth, and relatively easy to account for; the former is _much_ harder to account for, as it's an obligation by something to the pensionee, but not stuff actually owned by the pensionee.
(Not that people don't try; Ireland, for instance, has additional taxes on pensions worth over 2m, and actually does produce a notional valuation for DC pensions where they exist for this purpose)
The latter is clearly wealth, and relatively easy to account for; the former is _much_ harder to account for, as it's an obligation by something to the pensionee, but not stuff actually owned by the pensionee.
(Not that people don't try; Ireland, for instance, has additional taxes on pensions worth over 2m, and actually does produce a notional valuation for DC pensions where they exist for this purpose)