Of the three Roivases, Edward's got the most magick, Max has the most health, and Alex has the most sanity. However, this is ironic, because the circumstances of their "defeat" are done in reverse the pattern of the Ancients, though Alex has it a bit differently.
Max has the most health, and thus the most power, but was driven mad. Chattur'gha represents power and normally beats Xel'lotath, because he can't be driven mad.
Bonus Points: he also has the lowest sanity out of the three Roivases.
Edward was the smartest of the three, and had the most knowledge, but he was eliminated by the power of another Ancient. Ulyaoth, who represents knowledge, beats Chattur'gha (power) in the normal pattern.
Out of all the characters in the game, the ones with the lowest sanity are Peter Jacob and Michael Edwards. Why? Peter is struggling through World War One, while Michael Edwards is experiencing Gulf War Syndrome.
Each Ancient, near the end of the game, reveals a vision they have of them beating the Ancient they're strong against. However, that never comes to pass, at least on that playthrough. They were seeing into an alternate timeline where Pious was aligned with the disadvantaged Ancient and Alex summoned the other Ancient to defeat it. All three of the Ancients saw these misleading visions apparently because of Mantorok's manipulations.
To advance in the tutorial level, Pious must at one point destroy a statue of himself - this serves to teach the player how to target specific body parts on enemies. When later characters go to the mausoleum to claim the Tome, his desecrated statue appears among all the others, which are intact. The others are all the heroes who have claimed the Tome and their place in its history, sacrificing themselves to ultimately destroy that timeline's Ancient. Pious' destruction of his own statue is symbolic of his fall from grace, as he then goes on to become the Liche, the Ancient's champion.
When when monsters look at you they drain your sanity, and when monsters are killed they fade away (as opposed to humans who slowly decompose). Both of these help the Ancient Conspiracy remain secret.
Peter Jacobs, Michael Edwards, and Edwin Lindsey are all Tomebearers, but their statues aren't seen in the Screaming Chapel. The only one of them who is even likely to be alive is Lindsey, who has a dangerous career anyway: why don't they have statues? They passed the Tome on to someone else before they died, unlike the others, who died either carrying the Tome themselves, or left it secreted away someplace where only they knew where to find it.
