We all know that bigger numbers look great on promotional materials and there is generally nothing wrong with getting more RAM, storage and other resources for your cash. However, if you are old enough, you likely remember the so called "bit wars" that raged on for a while on the console scene - definitely a perfect illustration of what can happen when tech advancements get featured in marketing first and functionally perfected later, if at all. Similarly, having 6GB of RAM on devices like the new OnePlus 3 is great, simply because you get more for your money. But as most skeptics...
Source: http://www.gsmarena.com/video_shows_the_oneplus_3_struggling_to_manage_its_6gb_of_ram-news-18866.php