I don't think Big's popularity has decresed. He just released a movie that did 50 million worldwide. That's a lot of moeny for someone people don't really care about anymore? People are still sampling Biggie's voice and lyrics. The fact that both "Born Again" and "Duets" Sold millions of ablums off recycled verses is a testment. "Hypnotized" was just used for a trailor in a movie. Pac definitely left behind more material but Big legacy has grown over the years.
As for this thread, Bad Boy was going to rule 97 no matter what so Pac would have had to go back to the drawing board has they both lived. Fans would of still brought "Life After Death, No Way Out and Harlem World". Do people think those albums would of flopped?. Competition would of been very strong if Pac and Big for that matter lived. Yes, Jay Z, Eminem, DMX and even NaS careers would of been different. Pac and Big were 24 and 25 at their deaths. They had a lot of years to grow but it didn't happen.