how reliable is canyourunit?

So ya I recently got this new laptop and right now im loving it. I just needed it to play WoW and it runs it perfectly and I always have a 50-60 fps. But now with this good computer im thinking in investing more into it. My dream was to run crysis but many say you need high requirements. I went on canyourunit.com and it says I can run it and I even surpass the recommended requirments to play the game.

So I was wondering how reliable is the site? I dont want to shell out $40 and have it lag.

Heres my specs:
250gb Hard drive
4gb RAM ddr2
Intel® Centrino® processor technology with interrelated Intel® CoreTM2 Duo processor T5800
NVIDIA GeForce 9300M GS graphics

heres the link of my laptop:

http://www.bestbuy.com/site/olspage.jsp?skuId=9050242&type=product&id=1218012522418

reliable enough to where if it says you can play the game, then you can play the game.

If it says you can't play it, depending on why not, you can sometime get by and play at a lower framerate