Inoue arguably did better when it comes to being a champion(Frazier blew off his title vs Foreman,makes sense tho),but I think Frazier takes it when he beat the number 1 heavyweight in history.
Even though i think Innoue is a more complete and well rounded fighter due to his right hand, i can't look past Frazier here. Frazier won the biggest heavyweight fight , arguably, of the entire 20th century. He was a smaller heavyweight fighting and beating bigger men like Ali and Bonavena. Innoue is great but i need to see more before i rank him over Frazier. Frazier for me.
Inoue I suspect will go well clear when his career is over. He has 26 wins in world title fights already at 31 that's insane. Probably doesn't have as defining win as Frazier did against Ali but there is still time for that.
