it's not a wipe unless you micro, take a squad inside it wait for the enemy to come inside and go out, and if you fear it so much it can only be built on flag just use a mortar or some explosive on the flag and you should be fine, meanwhile a demo can be placed anywhere cost less and it can wipe alone without micro
But Obers Booby trap remains the same?
in the end BT is just a mine with the potential to wipe if you use it with a stealth unit