So I made a Romulan character, just to play with the new Romulan Science Destroyer. It seemed a lot more powerful than the Federation counterpart. I don't know why that would be. Possibly it's just a fluke impression. But on top of the fact that it looks more awesome, it also seemed to be more awesome... Might have to play more as a Romulan.
Considering that in addition to the science ship stuff it comes with the singularity powers as well it probably is more powerful than the federation version.