User blog comment:B214/Question & Answers 5/@comment-70.193.128.197-20151027215548/@comment-26520229-20151030014743

Well look at the difference that the possessor's ability has made in the story so far when comparing the capabilities/potential of a weapon. In volume 19 specifically there is an obvious and absolute difference between what an experienced master like Strada can do (with a replica of a weapon and in old age, mind you) and what an inexperienced but youthful user of the actual weapon (plus another legendary weapon) can. Strada has been one of the most immensely powerful figures in the story so far and we can only imagine what he would be capable of in his prime and with a setup like Xenovia's. Even then though, we already know that any of the Longinuses completely outclass holy swords like Durandal and that among them the true Longinus is by far the most powerful. In volume 9 sun wukong demonstrated that Cao Cao still has a long way to go in terms of battle experience and ability (of course he is also limited by being human, too, like Strada). With a possessor whose abilities far surpass Cao Cao's we have no idea what is possible yet, especially considering we don't know the full extent of Truth Idea yet.