I'd like to reiterate some of those points, capitalize on them so that the message is well-sent and drives home. Given that Count Dooku sparred with several dark side acolytes and Dark Jedi - as well as General Grievous, who he was "sometimes" hard-pressed to outduel (as well as Mace Windu) - his thoughts in regards to Anakin's physical prowess would weigh in a great deal.
ACstyles is also correct in another fashion: Anakin's connection to the Force is much greater than Bane's, so assuming that it came down to augmenting one's strength through the Force, it would be quite dumb to believe that Anakin couldn't match or surpass Bane's strength.
The omniscient narrator calls him "the fastest", too. Durge - who is ancient - also calls him "the fastest". Really, it's a no-brainer. Anakin is simply faster than Bane.