Update for Tom I just built a 1250 destroyer fleet to head towards the planet we are assaulting, still only have a 15.7% chance of taking the planet. 95 destroyers have a 5.4% chance. 600 Cruisers, which cost less then the 1250 Destroyers actually have a 14.5% chance, so it looks like we need to start saving for large fleets of more powerful ships.
I had a couple battleships in my earlier fleets, those alone apparently don't make a difference. But I'll try with an armada of battle and super-battleships on his main planet with the PD, as soon as I have the required resources, so say... a month?
