China GM TECH 2 does everything a real Tech 2 does, how?

10-06-2014 Update:
I just placed my order GM TECH 2 from obdtool.co.uk...
10-10-2014 Update:
It still hasn't shipped according to their website. I contacted them asking why it hasn't shipped yet. They are quick to respond, GM TECH2 is out of stock now and hope I would be patient to wait another 3 days, they will try their best to arrange. She even informed me that she declared a $69.00 value to help keep my customs fees low. Since obdtool.co.uk own good reputation, then I choose wait.
10-13-2014 Update:
I received a notice from the vendor that my GM TECH2 item has finally shipped.....today!!! I got a DHL track number.
10-20-2014 Update:
I received my Tech 2 today. It was a longer than expected shipping time but am quite happy with it so far. I have not yet used it and my first task will be to perform a CKP relearn. I'll let you know how it goes in the following parts.
Here are some pics:

Package: I did receive the TIS2000 software disc. It was in the bag along with the product stickers. So yeah, I got the full package.
I just performed a CKP sensor relearn and it went perfectly. No problems reported. I also performed a complete diagnostic of my ABS including the motor and EBCM. No problems reported. I also went for a drive for some real time data logging. All looked good. It was amazing to note all of the misfires that were being reported prior to the CKP relearn process. No misfires after the procedure.
Well gentlemen, this unit appears to do everything a real Tech 2 does. It works perfectly so far. The general quality of the unit also appears to be quite good with a robust case and very bright and clear screen. I am very satisfied so far. I know that I haven't even begun to scratch the surface of what it can do and I guess I will discover its various functions as time goes on. If anyone has any questions, please let me know.
What Windows Operation Tech2 is compatible?
I keep an old Windows XP laptop in the garage which has my service manuals for all my cars including the C5. At first I'm not sure what I can do with the TIS2000 software, then after I check find it’s working. Someone said VMWare works, and someone suggest Windows compatibility mode works sometimes. Try setting it for windows 7 compatibility and see if it works then, or try another mode like XP. I haven’t try this, and your options?