Pac is a Hip hop legend, cultural icon and is legacy will live on for decades to come but it's clear as day Biggie was more skilled and gifted.
His rhyme schemes, delivery, punch lines and lyrical/technical skill were simply out of this World. People tend to glorify the 90s with nostalgic bias but Biggie is one of the few from that era where the praise was undoubtedly deserved.
Pac will be more remembered because Biggie was ugly as fukk while he got girls wet but as an MC, to me Biggie completely washes him.