Exclude comments from loop

I’m using a comment rating (karma) plugin to display “top rated comments” list above the standard comment loop.

In comments.php

<?php global $wp_query;
	 $comment_arr = $wp_query->comments; usort($comment_arr, 'comment_comparator');
 wp_list_comments('callback=aaa&page=%orderby=comment_karma', $comment_arr); ?>

In functions.php

function comment_comparator($a, $b)
	{
	$compared = 0;
	if($a->comment_karma != $b->comment_karma)
	{
		$compared = $a->comment_karma < $b->comment_karma ? 1:-1;
	}
	return $compared;
	}
	if($a->comment_karma == 0)
	{
	$compared = $compared2;
	}

Basically the code checks for rating and sorts comments according to the value, the problem is it returns the full list of comments (only sorted via rating), where I would like it only to return comments with > 1 rating.

Thanks