For the record, I only understand the true advantages of the iPad mini when my wife bought one.
It's lighter, more portable, can put in your jacket pocket, and the speed is good enough.
I tested side by side with my iPad 3 on games, iBooks, surfing same web pages, Zinio magazines for the last 3 days.
I have come to the conclusion that the iPad mini is muh better in very way than the iPad 3 I have. Now I pick up my iPad 3 and it feels like a stack of heavy plates.