I certainly hope that Dooku's Makashi not possessing the kinetic power to meet Anakin's Djem So head to head in that particular instance doesn't project the false notion that any master of Djem So could've 'overpowered' Dooku/Makashi in the same manner as Anakin did. It's not like Dooku, or his form, were weak after all (he is regarded as one of the best swordsmen EVER for a reason), it's just that Anakin had so much [physical] power during their battle, that there was literally nothing Dooku could do aside from prolong his imminent death.
This excerpt from the RotS novelization paints that picture quite nicely:
"Skywalker was all over [Dooku]. The shining blue lightsaber whirled and spat and every overhand chop crashed against Dooku's defense with the unstoppable power of a meteor strike; the Sith Lord spent lavishly of his reserve of the Force merely to meet these attacks without being cut in half, and Skywalker was getting stronger. Each parry cost Dooku more power than he'd used to throw Kenobi across the room; each block aged him a decade. He decided he'd best revise his strategy once again. He no longer even tried to strike back. Force exhaustion began to close down his perceptions, drawing his consciousness back down to his physical form, trapping him within his own skull until he could barely even feel the contours of the room around him; he dimly sensed stairs at his back. He retreated up them, but Skywalker just kept on coming, tirelessly ferocious."