We gotta break it down to figure the better rapper:

Pac had a more emotional style
While Biggie could outflow Pac in a lot of ways

Personally, I side with the BX Native Biggie Smalls.......EAST SIDER!!!! Nothin against the west side though....

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The Madman

Breakdancer in Brooklyn

i like biggie's flow....but pac's shit is pure n any person can listen to his music....id go wit pac

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That Old School Mother Fucker

Aint That A Bitch?

Crhyme Sindicate