I don't know, but I think in order to see if that claim hold water you would have to comparatively check what and if their competitors are doing. If they're not strained for suppliers and are executing globally at once, then Cook isn't anything special. Google for example, to this day, isn't able to launch anything globally at once and even after some time after announcement. Lenovo is doing paper launches and then months after announcements their supplies are limited or geo locked. Samsung probably comes close, and it helps they're so vertically integrated.