does CiviCRM have the capability to handle approx. 70 pieces of data per customer?
Kia ora Mary. There are many civi instances with much broader data sets than  you are describing so there is no reason to think civi won't 'handle' the data. In terms of 'comparison' there are a range of searching/reporting capabilities with civicrm and also within Drupal if that is the CMS that could be used for this.