Queen Nanny of the Jamaican Maroons defeated the British because she was so very spiritual.
The British, being Christians, were also spiritual, but not spiritual enough to defeat Queen Nanny. Queen Nanny was from some heathen, African, wrong sort of spirituality. But still, she was nearly as spiritual as a woman from the Old Tasty Mint, which makes her a sort of honorary pre-Christian, and therefore very spiritual indeed.
Eventually the not-quite-spiritual-enough British signed a treaty with Nanny. In return for her independence, she agreed to capture any other runaway slaves. All very spiritually of course.