lol I guess if your not a hardware specialist but when you look at the statistics of an apu and what it sacrifices compared to a dedicated cpu with a dedicated gpu its not an under estimation at all
the ps4 is based on a custom 7870 design I believe? Or am i confusing the xbone? Either way, thats the hardware the ps4 is stuck with, The standard 7870 is somewhere between a 660 and a 660ti. His pc is on par or slightly better than (just in terms of the GPUthe CPU leaves it in the dust)... but if he was going to buy a ps4? He could use that money and buy a new GPU for the price of the ps4 and put it safely in its place, daring it to try to stand up to the power of pc's again
His cpu is by far more powerfull and his gpu is slightly better so yes it will be ahead and if he feels like buying a ps4 buy a 770 instead and be way ahead of the ps4 in every terms