OJO Joomla templates have different features in every category.

Standard Template is very simple. You may add/change banner and image.  It doesn't include extra features to customize it.

Advance Template includes extra features like font resizing, banner positions. It has higher compatibility with Internet browsers (IE, Firefox).

Premium has more extra features making it a very flexible template.  It has also font resizing but more positions for banner and modules.  What is unique with Premium template is you can toggle the module sleft and right giving you more freedom to use and work on one module.  It has compatibility with all modern browsers like IE, Firefox, Opera, etc.  (Note: It doesn't necessarily mean that all templates under Premium has all the above mentioned features)