How trustworthy is "can you run it" site

[Kami]

this site: http://systemrequirementslab.com/cyri
How trustworthy can it be? cause some games i own i can play it smoothly and it says i doesn't meet the requirement, while one game i tried was pretty laggy, not sure if it was the net or the pc but it said i passed the requirement :/ so i am a bit confused

[Sationas]

Well CYRI just compares your metal stats with the ones game provides. But in reality it says very little. By CYRI my PC could run probably any game at max settings, but in reality it can't because I have AIO with sh!++y cooling system and I have to play with medium settings at best.

But I'm here not about that. I just tried after some time to test CYRI and my ESET alert popped up saying:
"A potentially unwanted aplication (Win/....) was found in a file..... This is a program that might not pose a security risk but could affect the computer's performance and reliability, or cause changes in system behavior."

It's a first time I see such alert using CYRI. Does anyone else have similar experience?

[Esoteric]

I can run loads of games that it says my PC doesn't meet the requirements for.