bullshot - you seem to be under a misapprehension about what counts as a successful CDA. Perhaps a definition might help.
An arrival is classified as a CDA if it contains at and below an altitude of 6000ft no level flight, or, one phase of level flight not longer than 2.5nm.
Level flight is interpreted as any segment of flight having a height change of not more than 50ft over a track distance of 2nm or more as measured by the airport`s Noise and Track Keeping monitoring system.
Also, when below the Transition Altitude there is no requirement to inform ATC if your descent rate either is or will be less than 500 fpm.
Hope this helps.
DoB