I agree, Owen's arrogance is quite startling to me... What I don't understand is how Hsu wanted to challenge Kasparov for "title match"... World Title matches

I agree, Owen's arrogance is quite startling to me... What I don't understand is how Hsu wanted to challenge Kasparov for "title match"... World Title matches are managed by chess federation (FIDE), so it's not up to Kasparov or Hsu to decide. All in all, I would take both letters with a big grain of salt.