Why did the armies of the British East India Company mostly comprising of Indian soldiers win consistently against the more numerous and better equipped armies of the then Indian rulers?

अधिकांश भारतीय सिपाहियों वाली ईस्ट इंडिया की सेना क्यों तत्कालीन भारतीय शासकों की संख्याबल में अधिक और बेहतर सुसज्जित सेना से लगातार जीतती रही ? कारण बताएँ । (150 words)
Why did the armies of the British East India Company mostly comprising of Indian soldiers win consistently against the more numerous and better equipped armies of the then Indian rulers? Give reasons. (150 words)