Not really. There are very expensive PC options out there that have much more power than new consoles, but most people don't have them and it's not like games are designed to use their powers to do much. You don't get an amazingly better game experience by using an extreme high-end PC.
Wii U will play like a "typical" mid-range PC while the XI and PS4 will play like a "typical" high-end PC for some time. But what's more important is the games will be customized for them and exploit their talents. Most developers will design games to exploit these systems. It's doubtful that many PC games will make the new consoles feel "last gen" for a good many years. Maybe the Wii U in 2 or 3, depending on what it's really capable of pulling of visually.
