I don't think anyone here believes ND's collection of wins are better than LSU's, but LSU does have a loss and two of the wins that everyone is treating as really impressive came against teams that are 5-3 and unranked. I know those are quality wins, but a week from now those teams could have the same record as Wake and Pitt, yet I don't think anyone will use the latter pair as proof of ND's excellent resume. Nobody is using a win over 5-3, unranked Stanford as an example of ND's excellence.
Either way, a week from now LSU will either be unquestionably worthy of a place in the playoffs or it'll have two losses and be toast.