Measure of sprituality?

I then saw the woman move swiftly out of her line, and join the queue going to the Bishop for communion! "A christian mother!", I thought to myself.
This wasn't the first time I've seen such a move in a Catholic Church. Folks abandon queues that lead to people they feel are 'less spiritual'. It seems to me they have a hidden metric for measuring spirituality: Eucharistic Ministers < Priests < Bishops < Arch Bishops < Cardinals < The Pope.
I only wonder if spirituality can be measured. Can it?