It's as long as you have bars, meaning, punchlines (even though there are rappers like pac that never used punch lines like that but whatever) you stay on beat (yet it's ok when rappers like e40 Kool Keith, ECT to do it without being called wack but..ok) you're good fuck if you flow fast or not look at every rapper from the 80s and early 90s people just want to make a argument over everything this is one of the dumbest things to argue about because back in the days it was about your rhymes, your message, not how fast you can say it but whatever am from a different era