Ok then. Also, why does the PvP build use the Aegis set, I thought it was meant to be inferior to the Omega rep sets?
Aegis has two big things going for it and some subsidiary things. Primarily, it has THE best defense buff of any ship set. The 2 piece bonus is a total of 10% defense when moving. Even when stopped, the additional 5% will guarantee a positive defense rating as long as you have elusive traited (I don't think that's a word, but meh).
Second is that the engine is a Hyper impulse type engine. The mobius is very pokey for an escort, but as long as you have at least 48 engine power, hyper impulse outperform any other engine type.
Many, if not most, recommend the Borg 2 piece for escorts. IMO the proc is not reliable enough, and the engine is too slow. Plus, defense > all in PvP. They can't kill you if they can't hit you.
Finally, all of the stats boosted by the Aegis deflector are great for survivability and shield healing/strength, not to mention some power insulators thrown in the mix. All in all, IMO Aegis is the ultimate tankiness gear for escorts in general, and beyond perfect on a destroyer like the mobius.