I'm not familiar with the series, but the difficulty balance of G Generation Genesis feels off. My main team is overpowered really early already.
Surprised to read this. You don't happen to have Unicorn in your lines, do you? If you are going for a balance run, I suggest this:
- follow the chronological storyline, don't jump backwards with overpowered units into the Year one war.
- don't equip option parts.
- don't upgrade skills and stats on your pilots.
- don't grind (money, exp, or ace points).
Anyway, you can always upgrade difficulty on the fly to hard or extra.