With semiautomatics it's dependent on the operator. X person may not be able to fire as fast as y person.
True of basically any repeating weapon; revolver, lever, pump, whatever.
Don't worry, he's got all kinds of levels of stupid lined up to try and make us forget he wanted to redefine a mechanism by parameters unrelated to it's functional description. That nonsense was tantamount to defining the difference between an automatic vs a manual car transmission by speed and braking measurements.