This doesn't surprise me but the article missed out or only lightly touched on the following:
1) PCs for gaming are cheaper and more diverse than they have ever been. 10 years ago when the xbox and PS2 were king a gaming PC was £1200 -£2200. Even during the early PS3 and 360 years a good gaming PC was still close to £1k. Now £500 gets you a perfectly capable gaming PC with quality graphics. You don't need an i7 with £500 graphics card to get a good playable experience. Equally a £500 laptop will game quite happily at lower res and a £1k laptop will be really good. 10 years ago you just didn't game on normal laptops bar some easy RTS.
2) Consoles were great for split screen social multiplayer which is where mp gaming was at, whereas the PC has always been network/internet based multiplayer. As social interaction has changed and consoles have moved to network/internet based multiplayer there are no discerning benefits to them over a PC. In many ways the PC was ahead of its time on this.
3) The back catalogue of PC games from the last few years with graphics that still make the consoles weep is huge and ridiculously cheap. The content of PC strategy and RPG games can be measured in the hundreds of hours for many, most console games seem to be done in 10-20 hours. I can still re-play through the command and conquer RTS series and not get bored. I will still happily play the X beyond the frontier series with game mods. The only older console games that have replay value to this extent are the GTA series (also on and better on PC) and the odd final fantasy game (also on PC), oh and Skyrim (also on and better on PC).
4) Many big seller games are cross platform and this gives the intrinsic advantages of the PC even more headway such as; greater OS/Software flexibility, ability to do everything else (that consoles don't) other than games, mouse and keyboard etc etc etc. RTS and MMORPG games are never done as well on consoles as they are on the PC.
5) We have a more technical generation that have come through now. When I was at uni we had only just had the computer labs in for coursework. Some people still submitted hand written assignments. Consoles were plug and play and nearly everyone had a PS1 or N64. Gaming PCs were for the nerds/geeks and techies whereas now, the majority have one, and understand and can make the most out of PCs with confidence.