they are usually unfairly analyzed
-Gono had a very close fight with Dan Hardy that went the distance, with a split decision Hardy started his brief WW run that would get him a title shot---yet Gono had a toss-up fight vs him
-Okami was 13-5 overall, a very much winning record--he was cut off 1 standalone loss to Jacare
-Nakamura already had a streaky record and performance in Pride, he simply continued that hot-cold performance in UFC. He only had 2 fights in the UFC, 1 decision and 1 TKO.
-Kid and Gomi had already run their prime, health and motivation (for Gomi) were deteriorating even BEFORE UFC--again, it's a perception thing that they failed in the UFC when anyone who followed their careers knew they were not what they were even before UFC.
-Kawajiri vs Melendez 1 was very close, I had it for Kawajiri. It was a NYE Pride show, watched it live on PPV. but what you are told or only saw is that Melendez KOd Kawajiri in SF.
-Sakuraba is a UFC HW tournament winner. Beat Carlson Gracie BB HW by armbar.
-Kondo is 1-2 in the UFC, at the height of his prime, only fought 3 times in UFC. His fight against Dantas was exciting. Loss to prime champion Tito, had a tough fight against The Janitor.
Watch their fights instead of generalizing. Americans, English-men (whatever the proper term is), Brazilians, Mexicans lose all the time--they are not usually unfairly grouped as one gigantic group like the Asians/Japanese.