No, general working principles of regenerators and filters are different... and implementation of both types of equipment concerning SQ might vary depends on your preferences and power quality. I used to have PS Audio P1000 regenerator which did not make any perceptible improvement for my system however filter is useful but only for the sources. My friend who live in multi-storey building with far from decent power situation has totally opposite effect, power regeneration is the must for him. So, you need to know exactly what you want to do and what effect you try to get or if it’s too complicated just compare one to the other.
Power regenerator vs conditioner
If the goal is to improve the sound quality (soundstage, detail, dynamics, etc) and the issue is "noisy" AC, it would seem to me that a power regenerator such as PS Audio P15 would be far superior to a "conditioner" such as a Shunyata Denali or Hydra or Triton. Is this correct? Thanks .