FDutchman,
Thanks. That pretty much confirmed my suspicions. The Ki-100 was 600 pounds lighter than the Ki-61, so therefore it's handling and maneuverability were significantly better.
By the way, is there actual archival evidence of 14 Hellcats being shot down in one flight by Ki-100s over Okinawa, or is that typical Japanese overclaiming? In all my years of studying Pacific aerial combat, I never ran across any American records of a similar event where a U.S. Naval or Marine Corps squadron suffered a similar loss in a single combat.
Regards, Shuckins/Leggern