I was trying to power level my pally at 60 and he was getting 70 points a kill for an elite in ramparts while running with 4 x 70 shaman, he could solo a pig outside the instance for 1000 a kill ( both rested )

in the end, I found it was better to do quests and have the shaman help him, the quest turn in isn't nerfed and you are only doing collections for one toon.
somewhere around 65-66 he started to get normal points out of a dungeon so then I could run instances until I was sick of them.