The existence of this armor is quite inconsistent with the fact that even the Brotherhood proper was not able to manufacture new power armors, not to mention advanced versions, constructed by the Enclave many years later.
This version of power armor has a close resemblance to the advanced power armor used by Enclave forces in Fallout 3.
I would redo the sprite of the power armor to make it more retro. Not that there is anything technically wrong with the sprite, it's a great piece of art. It's just that it is a bit out of place in the Fallout Universe. But bear in mind that we had to design it over a year ago and Interplay approved everything we did. - Tony Oakden, producer of FOT (Freelancer interview)