Can you run it failing everything. Games still work fine?

I've recently acquired a new laptop. I know it isn't great, but it was nearly free and brand new so I figured why not.

Here are the specs;
ProcessorIntel(R) Core(TM) i3-4000M CPU @ 2.40GHz
Video CardIntel(R) HD Graphics 4600
Memory4.0 GB
Operating SystemMicrosoft Windows 8 64-bit
Service Pack0
Display Maximum Resolution1366 x 768

Now, I was having trouble getting some games to run, but after some searching I found that for some reason, some games have trouble playing in fullscreen without crashes being common. So I sorted that out, and the games ran fine.
I decided then to check the "Can you run it" site, since it always seemed fairly accurate in the past.
According to the site, every single game I enter seems to fail.
I've tried;
Burnout Paradise
Minecraft
Left 4 Dead 2
Portal 2
Saints row 4
Saints row the third

and a few others. All fall JUST short of "Minimum".
The thing I don't understand is, I've been playing Burnout and Saints row 4 just fine. Around 4-5 hours each in the last 24 hours, both on medium and I'm pretty sure I get 45-60 FPS with very little trouble.
So, why is CYRU telling me I can't run these games? Is it something to do with the integrated Video, or the Operating system?

Thanks for taking the time to read my question
-Karu

Yeah its your intel gpu i'm surprised your getting that fps.