I believe that Flair is the one who took the interview and made into something special. Flair could go either way with it whether it be the arrogant boast about his lifestyle of being the best or Flair could do an emotional one that could sell the angle and PPV.
Also in the extremely over the top version of Flair where he is yelling and screaming at the top of his lungs he is more entertaining than watching Hogan say Brotha to Mean Gene. I would rather watch Flair WOOOOOOOO~ and elbow drop beer cans than watch Hogan talk about the vitamins, the prayers, the big guns...