My 65 year old mother plays WoW and she can't remember rotations and she doesn't know her cooldowns no matter how many times I tell her, but she is better at using the mouse to move than I am...
So try to keep in mind that the bad you're playing with might just be a senior citizen who is breaking into gameing for the first time in their lives and their reflexes are a LOT slower than those of us in the 15-30 range. Also things we find easy like primary stats, hit caps, block caps, and etc... are really complicated. Mom's trying a druid now and keeps wanting to put intellect on her cat spec. I have to keep reminding her that if you claw things it's agility, if you wave your hands it's intellect.