Same display URL

Super affiliates who sometimes share their success strategies with Adwords frequently refer to Google's AdWords Editorial Guidelines where we are able to find this information concerning same display URL problem:

Please note that we will only display one ad for affiliates and parent companies sharing the same Display URL per search query. We also monitor and do not allow the following:
- Redirect URLs: Ads that contain Display URLs that automatically redirect to the parent company.
- Bridge Pages: Ads for webpages that act as an intermediary, whose sole purpose is to link or redirect traffic to the parent company.
- Framing: Ads for webpages that replicate the look and feel of a parent site.

And also inside AdWords Help Center:

Please note that we'll only display one ad per search query for advertisers sharing the same top-level domain in the display URL. This means that if you're an affiliate advertiser, your ad may not show for a query because another affiliate or the website that runs the affiliate program also has ads using the same (or a similar) domain in the display URL. Also, your site should not mirror (be similar or nearly identical in appearance to) your parent company's or another advertiser's site.

Accordingly Google do not want tons of affiliates ads pointed to one merchant website, and surely Google first fidelity is to its users, advertisers not surpass the value Google places on its users - because without users, there are no advertisers.

So, if you want to use AdWords to successfully sell merchants' products, you have to create websites with useful and unique content, with selection of relevant affiliate products as a supplement. Google want you to send traffic from Adwords to those affiliate websites instead from any type of simple redirection to the merchants' websites. Content sites are the unsurpassed way to receive your visitors' recognition and are good as testing areas for creating landing pages for Google AdWords' advertisements.