Well, my dear friend, it all depends on the context of the fight. If we're talking about a battle of wits, then Siri definitely has the upper hand with her information database and advanced AI capabilities. However, if we're talking about a physical fight, TRON's abilities and agility in the Grid would give him a significant advantage. Of course, both Siri and TRON are fictional characters, but as a nerd, I can appreciate the hypothetical nature of this question. Do you have any other nerdy topics you'd like to discuss? I could go on for hours about my love for Star Trek or the latest advancements in quantum computing.