That was his raw force potential, something he didn't know how to use at that time. Even when he tweaked on Asajj. He didn't know how to unlock those things during that point at time. That's why he HAD POTENTIAL. He never unlocked it. That's the whole purpose.
When Anakin and Kenobi force pushed each other, It showed they were equally on par.
Anakin would have been more powerful than Dooku in the force but he would not have known how to unlock it. Dooku would have fried him by the time he would have started freaking out.