Hmm, okay, I DO know that AA exp is the same difficulty to get no matter how high of a level you are.
As far as it being easier than normal lvl 51 exp, I can only say this....
I was TOLD it was about 3 times easier to earn than normal exp at lvl 51. My Ranger was leveling in Jaggedpine Forest to hit lvl 51. Soon as I hit lvl 51, the regular exp slowed down a LOT. I mean it was barely moving fighting the same poachers that before I was seeing reasonable movement. Just for the sake of checking it out I switched to see if AA exp moved any faster. From what I saw it was definately moving faster, but not near the rate as exp was moving at lvl 50. I didn't stick with it too long as I wanted regular exp, not AA so I didn't really get too far with it. Maybe it was just the old "Jedi mind-trick" making it seem like it was faster because I was told it was and expected it to be......
Okay, I'll assume I was wrong based on the amount of feedback, but other than that I think the rest of my post about why people wait till higher levels to AA is still valid. I haven't really done much in the way of AAing yet because of all the advice to wait. I might however AA with my Enchanter at 59 to get everything set for Dire-Charm, I really want that pretty bad. hehe
Sorry for any mis-information, it certainly not my intent, I was really under the impression it worked that way, and seemed to from my little test.
Guess I'm glad to have it straight now too then.