first of all... asking PC to judge if you should leave PC is extremely stupid... it's like asking your spouse "Can I marry someone else"... the answer of course is "no" so... why ask ^_^;
I never got to know you that well due to personality difference like me with MANY OTHER PEOPLE, so I don't know what's the hindering factor within PC that's making you feel this way... but if it's the moderator test result related, that'll be foolish as there's nothing special between mods, smods, preator and admins compare to "normal" members. We're all human, and each of us makes up an equal portion of PC. Just because someone's position is higher or more post count, that doesn't mean one member is more important and valuable in PC (that's why i hate that MOTM valuable question). One title and some color change in name won't do anything really...
However if it's a certain person or the atmosphere within PC that's repelling you from PC, then either do something with those people/situations. Tell them to a staff member/close friend in PC and see how they can help you (like telling them to your friend Lightning and Kayleigh will be a good start already).
To be honest... no one should say rather you should stay in PC or not. We are all selfish human beings and we want others to act in our favor. So whatever answer we give, it may not be really what's best for you... you should decide for yourself.