There's huge variation on difficulty between different players accounts. It's completely imbalanced and they likely don't care and think people are just whingers because they look at their statistics and see an acceptable bell curve for completion rates. I've been gearing up my droids and each piece of gear into IG-86 makes it harder and soon I'll have difficulty completing it even with my "farm TM then bench unit for higher node" strategy.
I currently make it every day but my wife has days where there's no way in hell her roster can take out the max gear and mod node 12 teams she faces, they just steamroller her.
