Vol 2 by miles.
Let me paint a picture with these words...
Imagine going through your ps2 collection on a hot summer day looking for a game to play.You find NBA Street Vol 2 in a jacked up case with the generic gamestop cover on it. You say screw it I'm bored and pop it in the ps2 slim. After being greeted by the ps2 logo and and the loading screen....you embraced the sweet sounds of Pete Rock and CL Smooth TROY playing during setting up the game. Once the game get's set with your dream team of A.I., DR J, and Jordan, you are good to go with doing crazy dunks, crossovers, and crazy chain passes while Just Blaze pump out them godtier tunes.
Bottom Line
Vol 2>>>>>>NBA Jam