Are cordless robotic pool cleaners as good as corded Dolphins?

Across the reviewers we read, the consensus is that corded Maytronics Dolphin units still deliver more consistent cleaning power and runtime, while cordless models (Aiper, Beatbot, Wybot) trade some suction for convenience. High-trust pool subreddit threads repeatedly note that cordless units often need a recharge between cycles and can struggle on sloped deep ends, whereas corded Dolphins simply run until the job is done.