The fact of the matter is you need over 200 Battleshios to take out a 400Mu undefended planet. If he has defenses set up and then abandons the game, you gotta deal with it. Unless you or someone else can come up with a better way to implement Planet defense, without allowing grunt rushing than this is the way it is. I think the next update will solve a lot of people's complaints on both RO collection and Combat.