While pectoral control typically starts from the lower sternocostal head and slowly the performer expands his control on the upper as well, there is a possibility that one may have control of the upper from the start.
The small clavicular head ability to bounce is debatable, although few performances like the following strengthen the possibility of existence.
Marc Lobliner exhibits insanely powerful upper sternocostal head pec bounce and a possibility of clavicular pec bounce.