User blog comment:RandomGuy96/So how do planetary defense cannons work?/@comment-5436239-20130127223836/@comment-4967682-20130127232955

In that case, PDCs should be treaty banned, as they force the attackers to bombard the planet with high impact kinetic weapons. But they're not and every Council race uses them. How does that work?

How will focusing on a fleet leave them vulnerable to cannons? The projectiles move so slow that you can simply move out of the way. You don't need to move to a precise spot, just anywhere but that exact spot where the gun shot.

I'm wondering how the guns on Horizon made any sense either. They're lasers, so they only have a range of a few dozen kilometers.