Below is a the part I've edited from function xtemplate_comment to get:
a) the 'average comment moderation vote total' each comment has received
AND
b) the total number of votes each comment has received to show up at the end of the "submitted by" statement which gets printed out on all comments.
The good news is that the comment vote average is showing up wonderfully, the bad news is that for the life of me I can't get the "number of users who voted" on the comment to show up next to it (it always just displays "1" no matter if the comment has 0, 1, 2, 3 or more votes).
Basically, I know that the information I want to show involves the "users" field from the "comments" table in the database and that "users" itself is serialized, arrayed, etc. Beyond that, I'm over my head at this point and have tried to get this to work for many hours...
function xtemplate_comment($comment, $links = 0) {
global $xtemplate;
$users = unserialize($comment->users);
$xtemplate->template->assign(array (
"new" => t("new"),
"submitted" => t("Submitted by %a on %b (%c/%d)",
array("%a" => format_name($comment),
"%b" => format_date($comment->timestamp),
"%c" => format_score($comment->score),
"%d" => count(format_commenttotal($comment->users - 1)))),