I personally think its infinitely worse.
Corporations are agnostic toward moralism to a point of deprecation of society. Basically its no different than a technocracy but it lacks any of the potentially good aspects a technocracy can provide. A technocracy will tend to follow some kind of moral code on some kind of fundamental level. While a corporatocracy has zero issue with turning your dad into soylent green to increase profits by 1%.
IQ should not be a measure of power and hence, control.
There is nothing we can do about this. Its always going to be the fundamental rudiment of power. Those who are smarter will always be more powerful than those who are not.