"Vs" (versus) threads are those that discuss how one comic character would do when pitted against another, usually in some sort of combat. Such threads are often interesting, fun, and even informative.
But, people can have strong feelings about characters, both positive and negative. Remember that the forum rules against flaming are still in effect and it is important to keep these discussions civil and not personal. Threads that get out of control are subject to being locked or deleted.