^ Another difference is that many actions in Ambrosia do not move the day/night cycle, allowing for more casual/leisurely play.
True forgot about that, and i find the atmosphere more chill and cute, but still less cute than Enisha's binding brand, than Celesphonia, although well in one game you're a chill priest and in the other you're tasked to save everybody, so it's understandable.
For me:
Gameplay: Celestphonia <Enisha < Ambrosia
Chill Ambiance: Celestophina < Ambrosia < Enisha
Fun: Celestphonia < Enisha < Ambrosia
Dark Ambiance (every game from Shimobashira have darks theme or dark events taking place, it's about how quick you get to see the darkness and how it's brutal): Enisha < Ambrosia < Celestphonia
Side activities: Celestphonia < Enisha = Ambrosia (both have a lot of side repetitives activities and somewhat fun, Celestphonia lacks FISHING, and well a lot of activities i guess (didn't finished the game, but after 6-7 hours of playing not much apart quests, fighting, story, and H events)
H events (depends on what you like, we could count image quality but still) Celestphonia =< Ambrosia =< Enisha
Post Game content : Celestphonia? Enisha < Ambrosia
Clothes variety: Celestphonia = Enisha = Ambrosia
Overrall personal notation:
1) Ambrosia and Enisha
2) Celestphonia
Even if Celestphonia came after those two i guess, it feels less fun and has too much control (must to this or this, can't go there or there until Chapter reached, not much original or differents area that feels lively compared to other games). The IU and menus somewhat look less advanced in Celestphonia than those two. Celestphonia feels like something new was tried, but there was too much things that the developpers tried putting and it feels somewhat rushed.