I always put it like this, Biggie and Pac die. I can't hold that against Jay or any other rapper. For example Jay Elec has so much fukking potential but he has a small amount of music for us to hear. So when talking new comers you can argue Jay Elec is better than Cole,Big Sean,Meek Mill, Kendrick, etc. But at the end of the day Jay Elec has a smaller sample size, so I naturally like some of these artist more.
Sure BIG has two albums that he truly did before he died, but at the end of the day I like Jay more. Maybe BIG was the better rapper (I think its debatable because to me on Brooklyns Finest they go head to head, but I think Big got him on I love the Dough). So I like Jay more, but if you like Big more its cool I think its okay to debate it. For you to say you don't understand how, maybe you should be more open minded and also consider that not everything is viewed from your perspective!
Oh and can we please stop pretending Life After Death is flawless? shyt's good, but its not perfect.