It can be hard for some Twinks to grasp that they're actually well below average skill-wise because their gear is about 3x more valuable than skill in a Random BG PUG. They have good kill/death ratios and draw the conclusion that they're in the top 10%.
When you say "grandfathered," do you mean that everyone who enchanted their rings prior to the change has OP enchants, or that since the change, the enchant works entirely differently for both those who did it before, and those who do/did it after?