What wrong is the benchmark of HDD?

Referring to following images, I would like to know what wrong the benchmark of HDD is, the performance is big different on following cases.

 

Does anyone have any suggestions?

 

Thanks in advance for any suggestions :smileyembarrassed:

 

Before restoring OS image into HDD ...

Image1

 

After restoring OS image into HDD ...

 

Image2

 

 

Seagate forum for detailed discussion:

http://forums.seagate.com/t5/Desktop-HDD-Desktop-SSHD/What-wrong-is-the-benchmark-of-HDD/td-p/218017