For anyone concerned, Saints of the past 100% need bodyguards because at best they are only marginally stronger than their bodyguard Knights. The sure fire way for Saints of the past to win against the witch is to literally have their Knight clog up the witch's forces so the Saint can have a clean shot at the witch. Elrise is an outlier in literally everyway possible.
As for power rating, the Witch's MP is around 3000, a typical Saint about 1500-2000. Elrise? She sits at a cool 100,000+ MP.