Yeah it's pretty apparent that when two teams are actually even player-wise, GDI is significantly better. Mass Meds+Hotties is basically game over for everything on Nod, especially when you add like 1 decent sniper in to counter Nod's repairs. GDI doesn't need much thought... though that's kind of supposed to be their thing.
Will probably be a bit of an overhaul involved with infantry, focusing more on letting Nod sort of be able to hold the field better with theirs, and maybe edit their tank game a little bit. It's just hard to balance this entire game around PUBs and PUGs, as they're like two totally separate games.