As people have said there is a world of difference to watching an event unfold live and rewatching 20 odd years later.

Just watching the fight now cannot capture the sense of drama, build up, tension etc.

Plus Hagler and Hearns are two of the biggest boxing stars of all time so of course any tear up involving the two would be much more widely acclaimed than a tear up between two unknowns Sithchatchawal vs Monshipour for example.