Not the same goal, real tank traps will effectively prevent you from going that way, unbuilt ones will just require you to shoot them one time before moving in. I think people are exaggerating this. That being said, it's been decided it is an exploit so w/e. But if you kill pioneers who are building it you'll have to kill it just as well, unless you're going to whine 'exploit' then, which would be kinda sad. :p
Building them behind tanks and stuff though is indeed exploitish
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