How can you tell if the scores are accurate, if it says:

NOTE: This project has not been run with Futuremark approved drivers, or the status of the drivers can not be determined. The accuracy of the results can not be guaranteed. For more information on how to get a valid and comparable result, please refer to this page.
Also, can't someone just set it to performance as opposed to quality, in the driver settings?

It seems there are many ways to inflate 3dmark scores, isn't that really cheating?