Amazing the topic went on for so long.
LK is nothing. Tirion nearly kicked his ass at Light Hope. The Forsaken plague brought him to his knees. Frostmourne < Ashbringer, given that it got shattered by it. Ashbringer is just some paladin sword make by the dwarves and their skill is nowhere near that of the Titians.
But that doesn't really tell us much about the state of the Old Gods now. They could really be only a fraction of their former power, after being beaten to near death by the Titians - even if they were released. The Titians actually have contingency plans should the Old Gods get loose. Yupe, "nuke the it from orbit, it's the only way to be sure".