There seems to be a bit of a negative bias against the wiki in this thread so I'll clarify as much as I can. The wiki might seem a bit biased, but it definetly tries to be as objective as possible. The problem is that due to certain threads lacking in clarification or threads simply not existing that it does seem like it might be. Furthermore, the wiki gets "patched up" after a new lore update. This means that it is possible that old propaganda such as "zamorak is evil, sara is good" could simply be leftovers from how the lore pretty much used to be. In old times, for all we knew, Zamorak was evil and Saradomin was good.