It is the Packers versus the Steelers in the Super Bowl.
preposition Compared with, as opposed to.
preposition Bringing a legal action against, as used in the title of a court case in which the first party indicates the plaintiff (or appellant or the like), and the second indicates the defendant (or respondent or the like).
Brown v. Board of Education of Topeka, Kans.
preposition Interacting with, especially to record reactions
preposition Mashed up with.
Kiss Me Thru The Phone vs. Last Friday Night
preposition Indicating one group or artist remixing another.