As I attacked some inactive players (with more transporters than it would have been necessary), a few times I got more than 50% of the metal on the planets.
e.g. 1
espionage__16:25:59____348.045 metal__/__183.557 crystal__/__51.279 deut
combat____16:26:17____206.264 metal__/___91.799 crystal__/__25.644 deut
espionage__16:26:20____141.880 metal__/___91.807 crystal__/__25.647 deut
e.g. 2
espionage__22:11:00____171.340 metal__/__5.042 crystal__/__331 deut
combat____22:11:12____104.764 metal__/__2.522 crystal__/__165 deut
espionage__22:11:32_____66.815 metal__/__2.526 crystal__/__167 deut
e.g. 1
espionage__16:25:59____348.045 metal__/__183.557 crystal__/__51.279 deut
combat____16:26:17____206.264 metal__/___91.799 crystal__/__25.644 deut
espionage__16:26:20____141.880 metal__/___91.807 crystal__/__25.647 deut
e.g. 2
espionage__22:11:00____171.340 metal__/__5.042 crystal__/__331 deut
combat____22:11:12____104.764 metal__/__2.522 crystal__/__165 deut
espionage__22:11:32_____66.815 metal__/__2.526 crystal__/__167 deut