Problem with If-Else If-Else Conditional in Plugin

[wottech]

I am having some issues with an If-Else If-Else that I have in a plugin for the postbit. The real kicker is it works on my own personal site, but it doesn't work on at least 3 other sites, running practically the exact same setup as me. From what I can tell, the conditional goes directly to the ELSE, but I am almost positive that the value being evaluated in the statement is being passed correctly. Here is the plugin code:

if(THIS_SCRIPT == 'showpost' OR THIS_SCRIPT == 'showthread')
{
   switch ($vbulletin->options['postbittype'])
    {
      case 1: $pbq = "ORDER BY `main_vehicle` DESC LIMIT 1"; break;
      case 2: $pbq = "ORDER BY `main_vehicle` DESC LIMIT 1"; break;
      case 3: $pbq = "ORDER BY `vehicle_id` DESC LIMIT 10"; break;
    }  
	$sql = $this->registry->db->query("select *, " . TABLE_PREFIX . "garage_user_vehicle.user_id AS PostUser 
    	from " . TABLE_PREFIX . "garage_user_vehicle  
	LEFT JOIN " .TABLE_PREFIX . "garage_makes
  	on (" .TABLE_PREFIX . "garage_user_vehicle.make_id=" .TABLE_PREFIX . "garage_makes.id)
  	LEFT JOIN " .TABLE_PREFIX . "garage_models
  	on (" .TABLE_PREFIX . "garage_user_vehicle.model_id=" .TABLE_PREFIX . "garage_models.id)
	WHERE " . TABLE_PREFIX . "garage_user_vehicle.user_id='" . $post['userid'] ."' " . $pbq);

    if($this->registry->db->num_rows($sql) > 0) 
    { 
	if($vbulletin->options['postbittype'] == 3)
	{
		while ($entry = $this->registry->db->fetch_array($sql))
		{
			$newyr = substr($entry[made_year], -2);
			$template_hook['postbit_userinfo_right_after_posts'] .= "<div><a href=garage_vehicle.php?do=view_vehicle&id=$entry[vehicle_id]>'$newyr $entry[make] $entry[model]</a></div>";
		}
	} else if($vbulletin->options['postbittype'] == 2) {
		$entry = $this->registry->db->fetch_array($sql);
		$newyr = substr($entry[made_year], -2);
		$template_hook['postbit_userinfo_right_after_posts'] .= "<div><img src='images/garage/car.png'><a href=garage.php?do=user_garage_view&id=$entry[PostUser]> $post[username]'s Garage</a></div>";
	} else {
		$entry = $this->registry->db->fetch_array($sql);
		$newyr = substr($entry[made_year], -2);
		$template_hook['postbit_userinfo_right_after_posts'] .= "<div><a href=garage.php?do=user_garage_view&id=$entry[PostUser]>'$newyr $entry[make] $entry[model]</a></div>";
       }
    }
}

Any help would be appreciated. It wouldn't be so bad if it didn't work properly on my own site...