Sixty percent rakeback only matters if the starting edge is thin

Rakeback is a rebate on the house edge, not a bonus on the stake. If a game keeps 0.56% of every unit, returning 60% of that edge leaves 0.224% with the house. The disclosed 99.44% becomes 99.78% effective. Price the same rules yourself at 99.3943% and the rebate leaves 99.76%.

Those two effective numbers are why the product is worth a look. They are also why the same 60% on a 6:5 tourist table would still be a bad seat. Rebate a 2% edge and you still pay 0.8%. The percentage looks generous. The residual cost is not.

Duel applies the 60% credit on every settled hand, win or lose, with no wagering loop. That is the clean version of the idea. It does not rewrite the paytable. It multiplies whatever edge is left after the cards are played.

So the analytical sequence is fixed. Price the rules. Apply the rebate. Then decide. Anyone who quotes 99.78% without showing the 99.44% starting point is selling the second step and hiding the first.

The working, including the 40% of the edge that survives, is written up under Duel Blackjack Pays. Use it as a template for any other "rakeback blackjack" pitch. If the writer cannot show both the raw RTP and the residual edge, they have not done the arithmetic.