Just to put some things into perspective, I have killed people, smited them, harassed them with damage at times that are bad for them, essentially nerfed their character, given titles, plague, flaws blah blah blah Yet, the message does not get across. It is not ok to act like a mortal and an immortal are on the same level.

Immortal on CF is not Alpha and Omega.
- An immortal is alpha on many levels when compared to a mortal.
Immortal on CF is not omnipresent and omniscient.
- No they aren't, but they sure as heck know a lot more than you do.
Immortal on CF is not truly all-powerful.
- Also they aren't. This has to do with a shared power thing that is easily demonstrated by the sphere system. Like you said similar to the greek gods. That isn't at all something that is ooc, it is something that is very much ic.
Immortal on CF is nearly impossible to kill, but possible.
- It is not possible for a mortal to kill an immortal. Immortal to immortal well... also a lot of gods that people say are dead is ICly pretty false. If it wasn't ICly provided that a god is dead well that power is out there somewhere.
Immortal on CF is ageless, but hasn't existed for all time.
- Also true.
Immortal on CF is extremely powerful compared to joe schmoe mortal, but since powerful(ish) mortals can become immortal, seems like the difference perhaps isn't as great as it might look.
- I think the difference here is a lot of people confuse an OOC immortal with an IC immortal. OOC immortals, we're just people like you. IC, if you brush it off and think you can you use slanderous names or other inappropriate things you are going to get reprimanded in some way. Period. IC immortals give you divine power! It should be a big deal. If you think it's not, I would suggest you reevaluate your roleplay.