Do I read the OP's post correctly? Some of those returns are capped at 5%? SP500 has gained 27% YTD as of today. Wouldn't that mean you are ~ 22% down from what an SP500 fund would be this year! Another of the annuities returns only 80% of the market gains leaving about 5% of this years possible gains on the table.
But if the market is down 25%, or Japan style up 1% for a decade OP still gets his annuity payment. Thats the tradeoff. You pass up big gains for a forever steady income regardless of what the market does.