1. You get brought to level 50 in the PVP area, Cyrodiil, so it's a little balanced. Skills and gear impact PVP. From what I hear a V10(max level) player is worth 1-3 mid-level players.
2. Not sure, but in TESO we'll probably be doing a lot of PVE to gear up for PVP.
3. For leveling I imagine...