PC Questions

Definitely Fallout NV, And X-com you should be fine on. And laptops aint that bad, honestly, just gotta get the right ones...And you aint got that bad a laptop.

You should be fine on playing Fallout NV, and XCOM on high-mid to high range.

Yes you should be able to play

I have a laptop too, its an Asus G75 with 3D way better than my desktop

What the heck are you guys smoking? Mid-to-high on XCOM with a fairly terrible laptop CPU and GPU?

Go Medium settings and hope it doesn't lag in XCOM, but you'll probably need to turn down 1-2 settings (like shadows) to get ideal performance.

Another question, what about Arkham City or Sleeping Dogs?

9 months ago I was using a laptop for all my gaming, and it was a pain in the ass (despite having decent specs). Since buying a proper PC, life has gotten so much easier for me :P (that's my advice to you)