You're right. This is no gamer machine. While The Sims should be fine the WOW'rs I know won't like this.
The 1080 is a nice touch. More benchmarks at http://www.notebookcheck.net/Preview-Dell-XPS-15z-Notebook-in-test.54267.0.html
The Intel Core i7 2620M dual core neatly side steps the usual thigh burn issue.
While the benchmarks on this unit are not "in" you can look at http://www.notebookcheck.net/NVIDIA-GeForce-GT-525M.43889.0.html and see what midrange means.
Again, nice, but the gamers should avoid this.