GW difficulty increases dramatically at level 60

I have about 15 one or two star generic characters. These characters are mainly attackers and I have them mostly in the 30-40 level. They are mainly attackers and have no chance against the 50+ teams encountered towards the last half of the Galactic War.

While they aren't doing me much good at the moment, they should in the long run. Once they are leveled and stared up. It's a trade off in the beginning. Do you want a few high star characters or a multitude of medium to low star ones?