Dxomark "measured" ISO vs Manufacturer ISO

People have been claiming that camera companies are cheating by mislabeling ISO. That is, one camera is cheating by using lower shutter speed than the other camera at the same ISO. They get this wacky idea by reading Dxomark "measured" ISO.

Now here is the problem that you need to explain for EPL1

Manufacturer ISO: 200 -- Dxomark measured ISO 124

Manufacturer ISO: 100 -- Dxomark measured ISO 124 STILL THE SAME!

However, if you check the shutter speed on EPL1, (at the same F stop), you will see that shutter speed slowed by one stop at ISO 100 - but yet dxomark measured ISO remained the same!

Shutter speed on the camera changed, but Dxomark measured ISO didn't.

I hope it's clearly now that your response to my post is irrelevant to the topic. My point was that dxomark "measured" ISO is not a standard definition of ISO, and has nothing to do with exposure, shutter or anything else -- as in this case shutter speed dropped by a stop but "measured" ISO didn't.

I hope this is clear now.