Big L was always overrated, never got the hype. Ain't no one listening to his songs now and weren't back then.
He falls in the same group as Canibus and rappers alike who are incredible MCs but weren't able to translate it on records.
You can say he had a small window, but from 96-99 he did nothin, while the other rappers mentioned in the OP were dropping classics.
Wherever shawty lo is all time Big L is one spot ahead of him