I Googled but so far the only thing I've been able to find is that once you tag a mob (as in, you get first claim, it was completely undamaged before you hit it) you get full XP and contribution for it.
Wouldn't that mean AoEs are OP for FATEs?
Nothing about damage though. Like if you do 50% to a single target, do you get more or less than someone who did 25%. How much more or less etc. Basically we know next to nothing right now.
Anyone have other info? Or do we wait till the game goes live and tests start being done?