Thinking of trying out low level PvP. I have no experience or prior knowledge of PVP or PVP at this bracket. I would like to ask for some advice, generally and specifically for mages.

1. Is there a class inequality like endgame? How well do sorcs fare? Do certain classes dominate over another because of gear, pets or skill limitation? Or is it more player-skill based regardless of class.
2. Who are the popular guilds in this bracket?
3. What pets are recommended for twinking at 15?
4. Is there a particular "meta" or popular skill set that is used frequently?
5. Is the best gear exp rifle brut/druid brutality set/elon fitness/ tarlok heart?

Thanks