I don't believe I need Adminship. I think the largest difference between the two, is admins being able to access plugins and other core server things. I know nothing about plugins (I know how to use them, but I wouldn't be messing around with them), permissions, or anything abut hosting and setting up Minecraft servers.
After reading that over, its kind of hard to understand. What I'm trying to say, is that Moderator would be more suitable for me. For it holds all the things I would need. I could help people on the server, use plugins to catch hackers, and punish people according to evidence I would be able to find. There is no need for me to be an Admin, as much a I'd love the fancy purple title, I wouldn't touch the things I'd be given access to.
For responsibilities, I think I'll just list responsibilities, for I already explained why I don't think I need Adminship.
If I were a Moderator, I'd have to show extreme maturity and fairness. Both of which I am capable of doing. I know I fool around on the server because I'm a fun guy! But I realize that if I were promoted I'd have to take a serious approach at everything. I know this, and am ready to do this. As a moderator, I know that I'd be responsible for helping new members, and members that are in need of my assistance. I am a friendly person, so many people wouldn't have trouble asking me for help constantly. I also realize that as a moderator it is my job to moderate chat, check logs regularly, and do my best to punish those in need of punishments. I can assure you that I am ready to handle those responsibilities. I am ready to hold my weight on Aggression. I am ready to be a mature serious player. I am ready to try my best at everything the server and its member throw at me. I'm ready to be a moderator.