Comments of chapter undefined of Dungeon of Pride, Laplace

Man why does Simon and his subordianted become too much over even same 700 level.You mention those above 500 are powerhouses but now even those above 700 are feel like become extra. ( Why they become too OP in short amout of time ) And why did Laplace become B rank dungeon too quickly without even completing hidden quest or there is no reason mention for their sudden rank up.