The Integrated Sales Reporting

Hello,

I always got differences between my Clickbank Order Form Impressions and my Adwords Order Form Impression such 60 OFI in Clickbank for 5 in Adwords the same day.

Anyone knows how to set up the Integrated Sales Reporting.

I am A bit confused because the code below appear in my Clickbank Secure Order Form:

<!-- Google Code for ClickBank Conversion Conversion Page -->
<script language="JavaScript" type="text/javascript">
<!--
var google_conversion_id = xxxxxxxx;
var google_conversion_language = "en_US";
var google_conversion_format = "3";
var google_conversion_color = "ffffff";
var google_conversion_label = "xxxxxxx";
//-->
</script>
<script language="JavaScript" src="https://www.googleadservices.com/pagead/conversion.js"></script>

<noscript>
<img height="1" width="1" border="0" src="https://www.googleadservices.com/pagead/conversion/xxxxxx/?label=xxxxxx&amp;guid=ON&amp;script=0"/>
</noscript>

Code (markup):

What is wrong? And please, I don't want to use any other reporting tool.