For a while I have thought there was something off about attack values in the battle log (and I'm not talking about the raising 1 above the defense issue). This recent battle to me is a good showing.
In this battle, all of my ships have a 2 missile attack. This means I would expect a roughly 50% distribution of 1 damage and 2 damage attacks over a long battle. Against this starbase, I had such a battle.
When I look at the battlelog, here are my results:
1 damage attacks: 167
2 damage attacks: 8
While some high variance battles are expected, I hope we can agree this is way outside normal distributions. I've seen several others battles where I felt that the attack numbers were just too low, but this is the first I have noted with such a strong distribution.
Reproducibility: Click on the electra fleet vs space monster note in the upper left to bring up the battle log for this fight.