Ccq.ru site reads your IP adress, and show only results wich corresponding to your region.
You can select any region in select tool and look results in it. Drupal remember you select.
Site made in Drupal because it has such functionality and built-in filters.
Site has responsitive design.
Site Pharmhunter.com was made in CMS Drupal because only in Drupal we can make new content-types and custom fields in it. It allows to fill this field without using HTML+CSS.
In WordPress such layout is imporsoble, If administrator don’t use HTML during filling content field.
This site has not responsitive design