When you live from a point of simple, basic fulfillment—which is fortunately your established nature—then victory and defeat, neither of them can mean too much. People have called that equanimity. You can use any other name.
Equanimity is not about being indifferent to this and that. That indifference is not the essence of equanimity; that indifference is only superficial. Equanimity is fundamentally about being full in your own inner delight. It is about being full and complete.