Ya'll clownin homie but I understand what he sayin.
B.I.G. was the best as far as natural talent, The delivery, the flow, the hooks, very witty, but raw at the same time, and he was comedic, an attribute that is over looked in a great rapper. B.I.G. could kill the rawest shit, or make a track for the hoes and still be in pocket.
Lupe is a better lyricist and i'm solid in saying he's the best lyricist I've ever heard and can go bar for bar with anybody living or dead. Depends on what you're looking for though.
Both are top brass, B.I.G. can't make wordplay laden metaphor minefield like failure, or Mural, but Lupe can't even dream of transitioning from Somebody Got To Die, to Hypnotize, to kick in the door to fuckin you tonight and not sound like he forcin any of it. But like I said, BIG will never make adoration of the Magi if he'd live to see his career play out twice.
Nobody could switch from a suit to all black timbs like BIG.