The crowd spectating the stage only thought about Kelso's emotion and rage, but Xu Feng was focusing on their battle style and resources.
The System never implemented any restriction in the one vs one.
All it stated was that players could challenge others, and if successful, they would replace the latter.
This implicit explanation made it clear that the System only cared for the victor.
As for how the victor achieved their result, the System wouldn't care.
"Kelso's going to lose." He softly muttered.
"Eh, you've mistaken the person, right?" Carmen, who was by his side, naturally heard the soft comment he made. "Reckonizer is being pushed back still, and his health point has already dropped to 50%. Kelso, on the other hand, is still quite healthy at 70%."
Nodding, Xu Feng obviously understood this point. But what Carmen failed to factor in was the players' current emotional state.