The whole thing is built on this shifting foundation, right? It's not static at all. Early on, you get Jayce who's basically got all the privilege – money, social standing, the Council's backing. Viktor's the scrappy underdog, brilliant but working in the library basement, fighting a disease. The power is clearly on Jayce's side, and you can see Viktor trying to navigate that, to be taken seriously.
But then, the Hextech core changes everything. Viktor's the one who actually understands it, who sees its potential beyond just tools. The knowledge gap flips the script; suddenly Jayce needs Viktor just as much, maybe more. The scene where Viktor stabilizes the Hexcore while Jayce can only watch? That's the moment the intellectual power balance shifts, and you see Jayce's respect become tinged with something else – maybe a little awe, maybe a little fear of being eclipsed.
That eclipse is the real crux. As Viktor's body fails and his obsession with the Hexcore grows, he's gaining a different kind of power – a raw, almost terrifying mastery over the very thing that defines their partnership. Jayce ends up with political and social capital, but Viktor is becoming something beyond those measures. It's a tragedy because they end up speaking different power languages entirely, unable to bridge the gap. Heimerdinger saw the danger in that kind of unchecked pursuit, but Jayce was too wrapped up in his own path to really see Viktor slipping into his own.