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 .
P.I. Audio’s UberBuss is the best power conditioner on the market. As good as the Shunyata Everest. Likely better; for 1/5th the price. Power factor correction of 1.
I have an former PS Audio P5 and all components except my amp are running off from. The P5 made a noticeable improvement in my system and our power lines are fairly clean. My amp runs off a Nordost QB4 II with QV2 and QK1. The Nordost has its own ground post, which I have running to a dedicated external earth ground rod which is not tied to the main house ground rods, besides being connected to Mother Earth which indeed they are. System is dead quiet and the noise floor is six feet under. I have not tried the Audioquest or newer Shunyata’s, but before the P5 had an older Hydra and the P5 was superior. Also using AQ receptacles and dedicated circuits and both devices I use make a difference.

OP — Because you seem to have these products in mind, I can share my experience: I have a Niagara 3000, a PS Audio P-15, and a Denali 6000T in my house, in different places.  Like you, the PS Audio narrative makes the most sense to me.  And I used the P-15 in my big system for a long time.  More than once it beat out the Denali.  (The Niagara 3000 was not designed for a big system and I didn’t try too hard to test that).  But I recently put in two 20A dedicated lines with 10 gauge wiring, one for the amp and one for the AC power hub of choice, identical length, etc etc. First of all, no AC solution bettered my system like that did.  Big time (and if you think about it, that sorta undermines the notion that — if you regenerate perfect power from scratch — it doesn’t matter what you start with).  Secondly, after settling into a more relaxed, quieter, yet more dynamic new sound, I tried the Denali in place of the P-15.  Denali was better by a non-debatable margin (but I still connect the amp to the wall directly).  Sooo, who knows.  I let my ears decide.  But I’ve read many times, and now experienced firsthand, that your existing power situation can determine whether you’ll prefer the regeneration route, the "distributor" route (Shunyata), or the conditioner route.  I’ll say this (Part 1): they all provide improvement in my experience, except your crappier conditioners that quiet down the noise by strangling dynamics.  I graduated from that trial/error chapter.  And I’ll also say this (Part 2): as my system has gotten better thru better speakers and electronics, the differences in power solutions are much more noticeable.  Everyone has their own opinion, but the AC power solution deniers are just, well, wrong.  
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. 
The Power Generator uses an inverter. First, It rectifies The Line Power to DC. Then, the inverter reassembles the 60 Hz 120 vac line signal. It responds very quickly to changes in demand. If the incoming line frequency drops to 55 Hz, or the incoming voltage goes high to 140 vac, or drops to 90 vac, the inverter doesn’t care or even notice. It uses what it gets from the line and converts it to dc. It ALWAYS supplies noise-free 60 Hz/120 vac to its load.

A power conditioner only filters the line power. It can’t raise or lower the line voltage, nor correct it’s frequency.