I think as time goes on and the three factions become more experienced, they will find out Gundam's weaknesses and develop new tactics to neutralize Celestial Being's current advantage.
What I also liked about this episode is that we also get a glimpse into what Haro is capable of:
At one point before his attack, Lockon delegates evasive manuevers to Haro, which makes good sense since he has to focus on sniping his targets. In theory, it should also work the other way, but then Lockon wouldn't be as fun a character because he'd be guilty of using an aimbot
