This must be in the core!
Drupal scores over Joomla in this issue which has a native CCK. The closest thing to a core CCK, (i.e. compatibility with all other extensions, ability to create forms, add fields, change the article structure and have own templates) on JED are SEBLOD & FLEXIcontent. FLEXIcontent is beautifully designed and simple, unlike SEBLOD you understand the system almost intuitively. I pity the people who run the support forum for they have to take up issues related to every other plugin in the JED. The templating system requires a special mention. I applaud the effort put in by the team to design such a cool CCK.