The risk-adjusted net present value is more likely to be higher for the other CPF LIFE payout plans in these circumstances (individual topping up their RA to the ERS, plenty of other assets, age 70 payout start, good health at 69.X) compared to the Basic Plan.
The RA-NPV difference is likely to be small as a percentage of net worth for a wealthy person, but that still doesn't mean it's wise to choose the smaller RA-NPV.
LOL. When all the stars are aligned....