A 0-ply luck analysis cost 21 0-ply evaluations, which is the same as a
0-ply chequerplay decision requires in average (assuming an average of
21 legal moves per roll). The cube analysis costs one 0-ply evaluation.
However, assuming you do a 2-ply chequerplay analysis the picture is
totally different. Assuming you, on average, analyse two moves on 2-ply
for each roll, you'll have close to 900 0-ply evaluations per roll for
the chequerplay analysis. The cube analysis is another 441 0-ply
evaluations, so the 21 evaluatiosn for the luck analysis is nothing
compared to 900-1350 needed for the cube and chequerplay analysis.