"Comment: Vote results" sort

I just need some help setting up the view to sort comments by top voted comment, I built this view in D6 but cannot get it to work in D7, in D7 it only works if the vote results relationship is required, the sort breaks if the relationship is not required, I'm guessing if it counts comments with no votes as "0" then it should work but there is no such option, any suggestions

My view:

$view = new view;
$view->name = 'comments';
$view->description = '';
$view->tag = 'default';
$view->base_table = 'comment';
$view->human_name = 'Comments';
$view->core = 7;
$view->api_version = '3.0';
$view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */

/* Display: Master */
$handler = $view->new_display('default', 'Master', 'default');
$handler->display->display_options['title'] = 'Comments';
$handler->display->display_options['access']['type'] = 'perm';
$handler->display->display_options['cache']['type'] = 'none';
$handler->display->display_options['query']['type'] = 'views_query';
$handler->display->display_options['query']['options']['query_comment'] = FALSE;
$handler->display->display_options['exposed_form']['type'] = 'basic';
$handler->display->display_options['pager']['type'] = 'full';
$handler->display->display_options['pager']['options']['items_per_page'] = '10';
$handler->display->display_options['style_plugin'] = 'default';
$handler->display->display_options['row_plugin'] = 'comment';
/* Relationship: Comment: Vote results */
$handler->display->display_options['relationships']['votingapi_cache']['id'] = 'votingapi_cache';
$handler->display->display_options['relationships']['votingapi_cache']['table'] = 'comment';
$handler->display->display_options['relationships']['votingapi_cache']['field'] = 'votingapi_cache';
$handler->display->display_options['relationships']['votingapi_cache']['required'] = 0;
$handler->display->display_options['relationships']['votingapi_cache']['votingapi'] = array(
  'value_type' => 'points',
  'tag' => 'vote',
  'function' => 'sum',
);
/* Relationship: Comment: Content */
$handler->display->display_options['relationships']['nid']['id'] = 'nid';
$handler->display->display_options['relationships']['nid']['table'] = 'comment';
$handler->display->display_options['relationships']['nid']['field'] = 'nid';
$handler->display->display_options['relationships']['nid']['required'] = 0;
/* Field: Comment: Title */
$handler->display->display_options['fields']['subject']['id'] = 'subject';
$handler->display->display_options['fields']['subject']['table'] = 'comment';
$handler->display->display_options['fields']['subject']['field'] = 'subject';
$handler->display->display_options['fields']['subject']['label'] = '';
$handler->display->display_options['fields']['subject']['alter']['alter_text'] = 0;
$handler->display->display_options['fields']['subject']['alter']['make_link'] = 0;
$handler->display->display_options['fields']['subject']['alter']['absolute'] = 0;
$handler->display->display_options['fields']['subject']['alter']['word_boundary'] = 0;
$handler->display->display_options['fields']['subject']['alter']['ellipsis'] = 0;
$handler->display->display_options['fields']['subject']['alter']['strip_tags'] = 0;
$handler->display->display_options['fields']['subject']['alter']['trim'] = 0;
$handler->display->display_options['fields']['subject']['alter']['html'] = 0;
$handler->display->display_options['fields']['subject']['hide_empty'] = 0;
$handler->display->display_options['fields']['subject']['empty_zero'] = 0;
$handler->display->display_options['fields']['subject']['link_to_comment'] = 1;
/* Sort criterion: Vote results: Function */
$handler->display->display_options['sorts']['function']['id'] = 'function';
$handler->display->display_options['sorts']['function']['table'] = 'votingapi_cache';
$handler->display->display_options['sorts']['function']['field'] = 'function';
$handler->display->display_options['sorts']['function']['relationship'] = 'votingapi_cache';
$handler->display->display_options['sorts']['function']['order'] = 'DESC';
/* Contextual filter: Content: Nid */
$handler->display->display_options['arguments']['nid']['id'] = 'nid';
$handler->display->display_options['arguments']['nid']['table'] = 'node';
$handler->display->display_options['arguments']['nid']['field'] = 'nid';
$handler->display->display_options['arguments']['nid']['relationship'] = 'nid';
$handler->display->display_options['arguments']['nid']['default_action'] = 'default';
$handler->display->display_options['arguments']['nid']['default_argument_type'] = 'node';
$handler->display->display_options['arguments']['nid']['default_argument_skip_url'] = 0;
$handler->display->display_options['arguments']['nid']['summary']['number_of_records'] = '0';
$handler->display->display_options['arguments']['nid']['summary']['format'] = 'default_summary';
$handler->display->display_options['arguments']['nid']['summary_options']['items_per_page'] = '25';
$handler->display->display_options['arguments']['nid']['specify_validation'] = 1;
$handler->display->display_options['arguments']['nid']['break_phrase'] = 0;
$handler->display->display_options['arguments']['nid']['not'] = 0;