I misread it as L/D max, which is equivalent to best angle of glide in all aircraft, and best angle of climb in a constant thrust aircraft (ideal jet).
C/L max, by which I now presume was meant maximum lift coefficient (CLmax), has nothing to do with best angles or rates of climb, unless the stall is limiting angle of climb, which is unusual in a prop and even more unusual in a jet.
Thanks, I did not know that
