The Rule Engine is where Optmyzr earns it. You build the rules, set the conditions, and preview every change before it runs, with a full log of everything that has ever fired on every account. That visibility doesn't exist in a managed service, by definition.
For agencies, channel breadth is the other thing: Google, Microsoft, Amazon, Meta, and LinkedIn in one dashboard, with one set of reports and one automation log. That saves the kind of time that shows up in how many accounts each person can manage.
And when something breaks, PPC Investigator finds the cause. Not "performance declined in Campaign X," but the specific keyword, placement, or device that drove it, with a chart showing how it rippled through the account.