According to the specs listed above he got
NVIDIA GeForce GTX 560 Ti 1GB 16X PCIe Video Card
That should certainly be sufficient for anything TOR could throw at it.
The link shows that he got this : Video Card: NVIDIA GeForce GT 520 1GB 16X PCIe Video Card (Major Brand Powered by NVIDIA) and that upgrading to what you said would have been another 156 dollars.
So I don't know which is right. The link and the specs he copy pasted are different. I was going off of the link because the formatting of the copy paste was rough on the eyes. If he actually did get a 560ti then yes you are correct. Still sad to see that if he did that he would have spent over 1100 USD. Making a similar system costs around 800 dollars right now and that would be with an upgraded motherboard and CPU to a 2500k :/