I usually agree with Papi Mal aka OhTwadi but i don't think telling someone how much bani one has memorized is a big deal. Memorizing something is not a big deal. We have been given the brain to memorize stuff. We memorize phone numbers, email addresses, some of our course work etc...etc...
We can memorize the math tables but does that mean we'll be able to solve the complex equations??
We can memorize bani but does that mean we'll be able to understand amazing play of waheguru??
I remember i used to cram everything up before my history exams. My father told me i have to understand everything and then i can write the exam in my own words, this made my life a lot easier. I feel the same applies for Gurbani : ).