Theoretically, porting is easier with xbone and PS4 to PC, but because of a different reason. The reason is the use of x86 architecture , which has always been used on PC. Both consoles have AMD processors and graphic cards that are based on x86 architecture just like a PC. I think the graphics cards are equivalent to AMD 7790, but I am not too sure. Google it.
As far as the configuration is concerned, the consoles always have that close to the mainstream PCs of the time when they are released. When PS3 and Xbox 360 were released 8 yeas ago, they had the graphics cards equivalent to Nvidia 7800GT and ATI x1900 which were mainstream cards back then, maybe even enthusiast level. The cell processor used in PS3 was way ahead of its time with 8 cores (7 for gaming/OS use and 1 for general tasks/low power tasks), if memory serves me right.