Well, maybe you don't notice and that's good for you (or not, I don't really know) but for the majority of people it's quite noticeable, especially if you can directly compare 60 vs 30 (the higher the better) and the point of the article is that if it's locked at 30 on consoles that may be a sign that it's not well optimized for pc and the vast majority won't be able to achieve 60...