People look at that score and will say that's why the MLS will never catch up. Of course, they'll ignore that Seattle tied Tottenham and that an NASL Minnesota team beat Swansea.
Not that I take any stock in the results. I don't think MLS will catch up anyway, but a friendly result doesn't instill merit for either side of the argument. One side doesn't care because it's just warm-up games, the other side is in-season and probably playing bench players or reserves, and neither side wants to get injured. They're even worse than FIFA friendlies, because at least those games have rankings attached to the result (that's debatable if they should). The club friendlies are just for money.