All basic tanks use the same warhead and have same range, so they have same percentage effectiveness against all target types. If Mantises are bad against stuctures, so are other tanks.I can actually understand. Mantisspam might seem effective and powerful when massed, but only against units.
Keep in mind that in a group of 30 Mantises, only some of them will be close enough to be able to attack your target. If you don't manually order them to get next to the structure and then attack, only the ones the closest will attack, while the ones further away will get blocked and will go around without firing anything at all. You can't just build 30 Mantises and order them to attack a target then wait until they're done, like you could with 15 Qilins, because you will lose them that way. You need to either split them and attack multiple targets at once, or keep them constantly on move.
Edited by mevitar, 27 June 2014 - 04:43 PM.