The thing that gets me is that you complain about each IG-2000 loadout as if every squad is carrying those options. That's impossible! IG-2000 is a good ship, but it really does take skill to fly, so you have to accept that either you're not as skilled as your opponents or your lists just aren't suited to face them so you should try something new. In what way are they beating you? If you're really resistant to changing your squad, try to figure out what they do that destroys your squad and prepare for it. Blocking is key, but always strive to be unpredictable.
As for me, I got tired of trying to get meaningful damage through with only 2 ships, so I've switched from dual Aggressors to 5-ship Scum squads at PS 2. Having more guns is easier, in my opinion, and if I make a mistake and land on an asteroid, that's 20% of my list unable to fire instead of 50%. Maybe you should try more ships. My most recent list is 2 Autoblaster Y-wings, 2 Mangler Scyks, and 1 Kihraxz. I've got three 3-attack ships and uncancellable damage on the other two shis. That's some decent potential damage.
Lets be completely honest here, dual IG-2000 is one of the easier lists to fly, the same goes for any low count identical ship build. To fly any ship well does take skill, but having only 2 dials that are identical as well as the same PS makes it far easier for planning, activation and maneuvering phase. I do agree with you that it is very unforgiving when blocked or on asteroids as you lose 50% of your firepower and actions. The problem is his list has little cohesiveness (the A-wings and Biggs), sub-par ships (A-wings and T-65s) and can be arc dodged by the IGs. His skill is an unknown but even a skilled player would have trouble beating them with that list.
