When i check out the planet bomber, it saids a 20 next to "Missile Launcher". I was wondering if that means extra damage or something like that, because each time i attack smeone else, i will always have 5x more attack power on the first round than the second round when i use the planet bomber. If it does mean extra damage, how much extra damage? 20% extra damage? 200% extra damage? Please answer and thank you.