If that is the measure, then we have to bring in Jobs' tenure as not only CEO but company founder that stretched 25 years as CEO, 1976 to 1985 and 1997 to 2011.
Cook only took the reins in 2011, and at that time arguably the company should not have focused on releasing yet more revolutionary products.
iPhone is the most successful consumer product in history, focus was correctly placed in supporting that, building moats around it and positioning the ecosystem to support the next big thing.
One product often left out, which may have started with Jobs, but delivery should be attributed to Cook is the new Apple HQ. The initial impact has crumbled due to Covid WFH.
However, this campus may turn out to be a force multiplier going forward. If so, it is a victory, but not in the minds of consumers.