I'm just going to keep repeating this until someone listens. *is feeling like the creepy person screaming "THE WORLD WILL END TOMORROW" and then the world ends the next day and no one listened*

Kefka -did- succeed, We all have to realize that he DID destroy a good 85% of the planet, even after you kill kefka, the only kind of reconstruction the people on the planet could do is rebuilding buildings, but since the planet is already in shambles it'd take A VERY VERY VERY long time for the planet to actually repair itself. Even when Kefka dies Kefka still wins, He set out to have everyone suffer, just for fun and such, and when he dies, Everyone's still going to suffer, THERE'S OBSCENELY LARGE CRACKS RANDOMLY THOUGHOUT THE PLANET, That's slightly difficult to fix.

The FFVI world isn't the FFVII world were the planet goes "OMG YOU GUYS THERE'S A BIG HOLE! FIX IT FIX IT!!" This one just goes ".. Man.. Errosion just takes so long.."

*wanders off*