Also, since WP's are units, they do not have a component damage model, which means that damage types that target specific components will not work. (Either that or they are treated as normal damage... I'm not sure... would be fun to wipe out a planet with fighter mounted Small Shield Depleters - god look at the damage/kT ratio on those babies

) If the former, then Tachyon Cannons are COMPLETELY USELESS against planets and they should really be set to target ships only...
