The problem is that it's not an alternate advancement as it claims it is, but definitely an advanced levelling.
If you kill a level 20 mob, even if it's red for you, you'll get 1 AA or something like that. A level 80 mob, 300 maybe, and a level 85, 900.
So by this pure math logic, you'll need 1 000 000 level 20 mobs, 3300 level 80 mobs, and 1100 level 85 mobs.
So even with a 10 or 20% Mastery XP Buff, the gain is totally null at low level (1,1XP instead of 1

) but increases at high level.
It's imo the biggest failure with the AA system. If it was a normal gain from all level, starting level 20, then a player would be greatly rewarded by fully levelling his toon from level 1 to level 80, doing instances, doing quests, and not using any offline levels. He wouldn't be more rewarded by doing powerlevelling than normal levelling, and in the end, you can bet than most low level instances would be more populated, as much as low level zones, as players would be rewarded from using the normal way of levelling.
As it is now, for a player who aims for high level content (requirring tons of AA), the levelling process rewards close to nothing apart from the pure fun.
It's imo LunaticAsylumLa the first thing you should fight for. Make levelling an AA rewarding process
