I was thinking and realized.. Is Red really the epic guy we once knew still? I mean he stopped a criminal organization. So lets think if he met gen 3 or 4's heroes.
Brendan/May:So I stopped these two rival hippie groups from drastically ruining the worlds geography..
Lucas/Dawn:I stopped a psychopath with NO emotion yet had a crobat from destroying the known world with god pokemon.
THE REAL REASON RED IS SPEECHLESS.
then Gold walks in..
Gold:Dude I had to finish up cleaning up the mess you left with Team Rocket. And rebeat your Region.
That leaves Red with the accomplishment of capturing Mewtwo and leaving Mt.Ceruleon in ruins in GS.. Which is revoked in HG/SS where it is in fact Gold that captures Mewtwo. As well as the birds. And With an Arceus in hand finishes the god subplot of DPPT and gains a newborn minigod.
Gold even steals the epicness of Brendan summoning Rayquaza by getting his own.
Gold/Hibiki/Ethan whatever you wish to call him.
Anyways. Red got shafted. His only legacy if you can call it one, is being the inspiration of Ash.