Depends on your Party. If you play without Lonewolf aka 4 Characters they arent as usefull. But with 2 they are mighty because they eat all the CC as i already said. Also Summons are not the Topic here. The Topic is Melee and there is still no Reason why one should think its too weak except when he plays One handed + Shield which still sucks but Two Handed is extremly powerfull.