Add result.success into results page table
Platform Wordpress - did not look into the Drupal but I almost 100% sure it is the same.
The xAPI statement 'result.success' should be added into the results page table, or atleast exposed in the 'h5p_alter_user_result' action hook.
The reason - the result for content type which evaluates the user response e.g. Dictation is meaningless without the success part.