One peek at John Carmack's Twitter feed will convince you that, hey maybe this guy is smarter than you. Lead programmer at id Software, Carmack probably has more insight into future tech than the rest of us. While the next generation of consoles will likely represent a significant jump in computational power, Carmack believes that next-gen games will still target 30 frames per second, much like this generation.
Responding to a fan on Twitter, Carmack said that "I can pretty much guarantee that a lot of next gen games will still target 30 fps," without divulging any more information. This doesn't necessarily mean that next-gen systems will be underpowered. However, it suggests that developers are likely to use their graphical bandwidth on making prettier images.
Should Carmack's prediction come true, PC gamers could maintain their technical advantage over consoles even when the next generation launches. Now, PC games typically feature visual improvements over console counterparts, such as unrestricted framerates.