"Sealed the core? Won't allow me near it?" Arad smiled, lifting his palm up, "That doesn't matter anymore." The black hole appeared on his palm, spinning with a blindingly bright accretion disk illuminating the bright yellow sky.
The only thing holding back the black hole from swallowing this world was Arad's will and dominion over the void. This was his greatest weapon and threat. If they knock him out, the black hole will swallow everything, and if they don't give up, he'll unleash it anyway.
But there was a problem. They had already given up, but not the way Arad wanted it. Arad wanted them to give up because they couldn't win. Now, they gave up because it's a hassle to win.
Arad knew he couldn't win, so he was ready to accept that neither he nor the twins could lose, a real tie. He wanted to force that situation into a reality, but he didn't want them to hand it to him like this.
The twins are saying that they can secure a clean win but are giving it to him.