I’ve seen both films. I saw Manhunter many years before I saw Red Dragon. I remember Manhunter. I have mostly forgotten all of Red Dragon. I think that says a lot of each film’s merits in my mind.
Seriously, even though I’ve read the names of the stars in Red Dragon, I still cannot visualize Ed Norton and Ralph Fiennes. But I remember the CSI guy and the totally no name actor who played Dolarhyde. They are etched in my memory. Red Dragon was absolutely forgettable.