I'm planning to have game one headset, which seems to be stereo but using Creative Sound Blaster X-Fi Titanium Fatal1ty Professional 70SB088600002 7.1 will it be 7.1 and deliver the same performance as PC 363D ?
No, I'm not exactly sure why they call it '7.1 virtual surround'.
Though the surround will be great there won't be any real 7.1
The models that come with a desktop unit in the Creative Range are great for headphones. I am personally running my Sennheiser HD700 headphones off of a SoundBlaster ZXR and I don't think I've ever experienced anything quite like it.
I highly recommend a SoundBlaster ZX with the PC G4ME headphones.