That guy's explanation of the importance of ROPs was pretty misleading, also more than a year old video.
"The Xbox One has 16 ROPs while the PlayStation 4 has 32. While this may look like it means 2x the performance, its not quite that simple. ROPs stands for Render Output Pipelines. At the end of the GPU's calculation's process, the ROPs draw out the final image. The trick is however, that the ROPs are only as useful as the GPU is Powerful, so you could have 2 billion ROPs (for example), but if your GPU is not powerful enough to utilize them, it means nothing. While the Playstation 4's GPU probably needs a little more than 16 ROPs, it is not nearly powerful enough to utilize all 32. Just to demonstrate what I mean, AMD's new R9 280x graphics card has 4.1 Tflops of computing power, more than twice that of Playstation 4, and it gets by fine with just 32 ROPs. The Xbox One, on the other hand has a slightly less powerful GPU, and so it probably has just the right amount of ROPs. The reason Sony could not just put in the exact number of ROPs they needed (like 20, or 18) is because ROPs are only made in chunks of 8,16, 32, 48, & 64, so they figured it would be better to have too much ROPs with the 32 configuration, than to bottleneck their bigger GPU with just 16 ROPs."
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