Then they missed some. Outlands has more than enough quests to get you to 70 without running out even if you start at 58. They must have skipped zones as well as skipping the Dungeon quests if they ran out of quests at 69. In fact, there are so many quests that after you hit 70, there are still many quests available to do for gold/rep instead of XP.
Outlands might be open to level 58, but it is definitively designed for level 60+. Yes, you ‘can’ but imo and imx you should /not./ This is the advice I have given every time this question has come up, from OG TBC and since into TBCC. I have yet to see anything to change my mind on the matter.
The Outland experience is just more fluid, more fun when you are 60 or 61 walking into HFP.
Per kill. The mobs in EPL crumple like paper. If you can complete a multitude of quests faster, you will yield larger amounts of exp. Sorry sir, but not false.