Of course, its personal opinion and preference, but why even do that? Why is that necessary? Because if people said Migos was better than Outkast or Mobb Deep, the same grace would not be extended to them even though it would be personal opinion and preference.
I can't compare Clipse to a Kast, a Mobb Deep, or a UGK especially OutKast. Why? It is what they bring to a table as a duo. Yes, Clipse has bars, but so do the other duos. The other duos also bring much more to the table. Kast produced a lot of their own music and played instruments. Havoc produced the lion's share of Mobb Deep's music. Pimp C sang on, produced, and played instruments on a lot of UGK songs. These duos didn't need a Neptunes. The Neptunes don't take away from the Clipse's greatness, but they do enhance it where the other duos didn't have that because they were that.