you cant fairly compare 2pac and biggie, or death row and badboy. here's why:
2pac was known as more of a social issue rapper. songs like brenda's got a baby, keep your head up, letter to the president, ect were all making a statement about how he saw the world around him. now i'm not saying the guy didnt make party songs and some "gangsta shizzle", but pac's most important contribution to music was calling it how he seen it on social issues.
now biggie was a story teller. songs like warning, suicidal thoughts, who shot ya, i got a story to tell, ect. the guy was great at painting a picture with words. and never once can i remember big ever making a song relevant to social issues.
so the two can't be compared the way i see it. way too different in styles, flow, and delievery.
as for death row and bad boy, death row was straight gangsta having limited radio play with the exception of dre, snoop, and later pac, while bad boy was more rap-pop and party music and had tons of radio play with biggie, ma$e, the lox, 112, craig mack,puff daddy, p diddy, diddy, sean combs, or what ever the hell the guy calls himself now.