Larvatus,
the Korth is also machined out of a forged frame. Mine has held up quite a bit while the nice .357 MR73 of a friend had one serious malfuntion due to a spring getting out of alignement. It's over twenty years but we opened the gun up and it was the trigger rreturn spring, if I remember correctly. Until that incident, I had been seriously impressed with the Manurhin.
The MR73 that is superior in ISSF is the .32, besides in its native Germany there are still as many Korths used at competitions as Manurhins. But when it comes to the top competitors, you won't see many revolvers anymore.