You don't need public charisma in a 1 party state
The People's Republic of China is not a democracy, they are not elected into office. On the other hand, American leaders need public charisma to sway the masses for votes. Chinese ones do not, they just make deals with each other in private. No Chinese politicians are noteworthy orators on the caliber of US politicians because none of them have to sway the mind of the public to elect them.
This is reflected in what each country contributes to the world; China exports manufactured goods, America exports Hollywood.