@Kheldar42There have been a couple of things that have been altered for balance.
Off the top of my head, the big ones are:
--Heavy Rotary Cannon for bombers now has a huge maneuverability penalty
--Assault Shield also carries a big maneuverability penalty
--Ion Missiles speed has been reduced
--Barrage Rocket damage is now 60 instead of 100 per rocket
--AWing shield recharge rate has been reduced
--While charging Plasburst lasers you will take increased damage
--TIE Bomber Reinforced Hull bonus was reduced some
So, if your loadout included some of those items, that could be part of it.
It's also possible that you were going up against people that have been playing a lot more now.
In the beginning a lot of people on New Republic weren't overcharging shields or managing their systems very well, might not be the case anymore. Also, when playing with or against people below level or so, remember that they have very few points towards upgrades which isn't necessarily a penalty, but does mean they have fewer options and less experience.