I just love how the "druids are better" supporters are lowering themselves to "My druid needs a zillion splatbooks to try to keep up with a core cleric" and "Splatbook support still can't make the druid win, now I'll arbitrarily start banning cleric core spells! Also the cleric can never cast sanctified spells, gets zero domains while the druid has every prc, domain and feat in existence simultaneously plus sanctified all spells!".
Uh... Can I buy pot from you, because you are clearly very into drugs?
Let's see, so far the splatbooks for Druids I mentioned are "Well if you are casting Shapechange, you probably want to turn into monsters, Well if you are using DMM Persist, the Druid is probably going to get that too (even from the same book), Well if you are using absurd Calling Magic, the Druid will probably use that too." Yeah, totally just swimming in splatbooks. I mean yeah, the SpC also makes Druids and Clerics both better. But I'm not even sure anyone has mentioned SpC spells. Since Cleric supporters are too busy talking about Mirror Mephits.
But yes, I'm going to assume for the sake of argument that your DM doesn't let you use calling magic to have an infinite army of outsiders of greater CR than you. I'm also going to assume your DM doesn't allow you to use Wish to wish for items of Wish, or items that have XP costs in the millions that you don't have to pay. That's not because I'm banning Cleric spells, thats because I am talking about ways you can actually play the game, instead of ways that immediately break down and result in nonsense.
I'm not sure who objected to or even suggested that sanctified spells were an issue. But yes, name two domains, I'll let you cast all the spells from those two domains. The problem is that Cleric supporters inherently name 46 domains when making spell comparisons because they like to imagine what some clerics are theoretically capable of, rather than what a specific Cleric you might actually play can do.
If shapechange cheese is allowed, then you bet any cleric with half a brain will pick a domain that unlocks it. They have another free domain to pick from anyway.
Well, since so far the cheese in question is "casting Shapechange at all" I'm going to say, probably not. See, the thing is, if you aren't level 17, the Animal Domain is pretty fucking shit. So if you are playing one of the 99.99999% of characters who will never see 9th level spells at all, even if your DM would have allowed Shapechange to be cast, you still probably won't have the Animal Domain, because why would you, when you can pick a Domain that doesn't suck at your current level.
And if wish loops are allowed, then the cleric can pull it off earlier and easier and in more ways than the druid. So doesn't matter if Zodar shapechange allows it, cleric already pulled it a crapload of levels ago. If the cleric ways of unlocking free wishes are being banned, I see no reason why the druid shouldn't also get his slower wish trick banned.
Well... no, not at all. If the Cleric is allowed to use Miracle to do the things Miracle does that are not Broken at level 17, then the Druid might be allowed to use the spell Wish at level 17 to do the things that are not broken. So for example, imitate level 8 Wizard spells.
If on the otherhand the Cleric is allowed to use sacrifice spell bullshit to get a Wish at level 3, then the Druid can just buy a candle of invocation at level 3, and also get some wishes, and wish for a Staff of infinite wishes.
So if no one is allowed to break the game, then they are on pretty even footing at level 17, and if people are allowed to break the game, then they are still on equal footing at level 3 when they both break the game. (And also, the Cleric probably doesn't want to waste his time on Sacrifice spell bullshit, because he could just buy a Candle of Invocation). And that's my point, having "earlier" or "more possible ways" to break the game is super fucking meaningless, because any class can just be an Elf, put a bunch of points in Profession (Farmer) write in their backstory that they farmed for 300 years, and then buy a Candle of Invocation at level 1. And no one will ever care, because the things you can do to break the game have no bearing on playing the game.
Since it is at least possible for DMM Persist games to be played, I bring it up as, if your DM allows DMM Persist, the Cleric is probably stronger because the overwhelming number of short duration stacking buffs probably allows a Cleric Archer to outclass a Druids slightly better save or lose/die spells and better DCs. But if your DM doesn't allow DMM Persist, the Druid is stronger. But if your DM doesn't allow DMM Persist, but does allow you to "adventure" from your mansion while 100 Glabrezu's do all the work for you... well, 1) that's silly, because he should just allow DMM Persist if that is his balance point, and 2) Then both the Cleric and the Druid can and will generate an army of 100 Glabrezu's to do their adventuring, and the only difference is that the Cleric spends his time resting in a sweet Cathedral he built with Wall of Stone and Stoneshape and the Druid lives in a sweet Treehouse he built using Plant Growth, probably some splat spells that make trees grow bigger or grow as Ironwood or some shit, and WoodShape.