My thinking exactly. Muhammed had his moments on the battlefield, but was not a tactical genius in quite the same way that others on this list, such as Khalid ibn al-Walid. But he was charismatic, and able to motivate his followers and rally others to his cause, and he had momentum (and a bit of luck). For instance, his armies (not sure if the Prophet himself was present) were repulsed from Taif in 630, but shortly thereafter joined the muslim cause. Now, such traits are useful for general and politican alike, but are not quite enough to make him the best battlefield commander.