blade5x, no matter how fantastic your computer is, different software will always perform differently. It's also higly relevant whether the browser uses a lot of power. Browser developers could easily make the fastest browser ever. Problem is, it requires 1GB free RAM, a 3GHz dual-core processor and a CUDA compatible GPU and operating system.
What browser developers aim for, is good performance with less hardware usage. I.E. FireFox has always been wellknown for stupid memory leaks, where its RAM usage would just slowly rise higher and higher. That's why browser performance is relevant, even if you have a good computer.