First Obi wan says that SFD was killed almost 10 years ago, and we know he saw QJ killed with his own eyes! So how could they be the same person. Obi obviously has some knowledge of who SFD was and so do Mace and Yoda. I dont think QJ could have fooled both of them!
I am pretty sure that the Kaminions say that SFD made the order? But who told him to place the order is the real question.