FPS only matters upto a point.
Say in CSS for example, if you have 30FPS then defintiely the 300FPS guy can kick your ass around. But as long as you have enough FPS (CSS 100+), you will not be at a competitive disadvantage as you were with 30.
High FPS makes gameplay a lot more smoother, and it does help, but after a certain point it doesn't matter as long as it's high enough. So no a $10000 PC guy will not kick a $1000 PC guy's ass, but the $1000 guy will dominate the $300 guy.