One of the things the Sony Xperia Z lords over the Samsung Galaxy S4 (http://www.gsmarena.com/samsung_i9505_galaxy_s4-5371.php) is its IP57 certification, which grants it dust and water resistance. That advantage might not last long though, as a rugged version of the Samsung flagship might be unveiled in the coming weeks.
During a Q&A session, Young Soo Kim (President of Samsung Gulf) was asked about the company