What do you want to compare this OpenTibia server with then? Other OpenTibia servers? If you compare to them, then the server will go down hill pretty damn fast. Of course we have to compare to RealTibia. Otherwise we cannot improve the server, because you can't fully say that RealTibia isn't the best product regarding Tibia out there. That's kinda the point. OpenTibia servers will never be as good as RealTibia. However, the only thing that SHOULD be different from RealTibia and OpenTibia is the experience, skill, loot and spawn rate (if it says RL). Other than that I think that OpenTibia servers should be identical to RealTibia servers. You will eventually get higher level than the average level on RealTibia, and then the attack dmg / healing dmg will improve, BECAUSE of your higher level.
Please give me an explaination if you do not think that we shouldn't compare to RealTibia, and WHY.