Yes they do crush Humans and Monsters in terms of mana production but your original post made is sound like you were saying they did trounce UD. Though if the Humans and Monsters had a repeatable mana build then they would likely be able to hold their own as well.
They are a lot closer than you made it sound. And we also seem to disagree on what "easier" means in terms of empire building. The fact that Elves need fewer mana cities seems easier in your mind, despite the fact that you need to ensure a strong economic base to support them. While easier in my mind means having to worry less about economic short comings to get the production out the door. UD already need to build mana cities to support pop and units so you will already be on your way to having a large mana income.
Thus with undead you can just start building a mana city without worry it is gong to kill your early income. A size 5 Elf Mana city is +17 Mana and -14 Gold while the UD is +19 Mana and -12 Gold. This sounds like a close race but it's not really that close as the UD are now finished with upkeep buildings at this point since all of their Mana Farms are free. The Elves next building in the mana chain has 10 gold upkeep and thus brings their city to Size 6 with +21 Mana and -24 Gold. The UD also appear slightly underwhelming because I remembered to include pop cost this time. But the Elves need another city it offset that with food so it is misleading. The UD can also choose to take less Mana production and skip the Mill of Souls to go right into Mana Farm production. Thus they can have size 5 city with +17 Mana and -4 Gold. This is a LOT better in terms of economic impact since your gold production barely takes a hit.
The UD have an early lead and much cheaper cost, while Elves can overtake them on a PER city basis their cost are much higher and thus need to be offset by other cities in the empire. Where as undead require very little outside support to offset the expense of running a mana city.
At least quote the full sentence:laugh: What I said was "They need a lot of mana, but they have by far the easiest time making it too, even beating out undead due to the fact that UD also eat mana for population." Do note that last part, because i think it does highlight that it's pretty close. For me the number crunch isn't the main point. My main point, when I talk about the ease of empire building concerning one resource, is how many cities of that type do I need at one time. Now the fact that elves pay more gold for it is largely irrelevant to me, because my only goal is that I have to build as few dedicated mana cities as possible to meet my needs, while all the rest are either gold cities, troop production, or perk cities. Elves with their higher max mana out of a single city do trounce the UD in that regard. I know others might have other standards, hence why I didn't claim that elves trounce the UD in mana production, instead I mentioned that they have the edge in my mind.
As for the early crunch, that's why you won't be building the mana city as your first city aside from the capitol. I always put down a gold city first, preferably two or three, because I need one anyway to pay for the capitol's building chain. Also count in one food city at some point, when I see a good location for it.