My opinion is that Yudhisthira himself is an authority in this question. He should say whether you are won or not won.
युधिष्ठिरस्तु प्रश्नेऽस्मिन् प्रमाणमिति मे मतिः। अजितां वा जितां वेति स्वयं व्याहर्तुमर्हति॥