mathers strength

The result was hardly a surprise at this point.

“Is that all?”

He did not sound remotely shocked. The dense wall of flames was blown apart like tearing through wet paper. And Mathers stood at the center of the vortex without a single scorch mark on him.

They had originally wanted to use Mathers’s body to stop Coronzon.

Use it?

That was no longer an option. In fact, it was entirely possible he was even more powerful than Coronzon and was the true mastermind here.
- To Aru Majutsu no Index NT 21 Chapter 1 Part 1
[...]
It was Kamijou and not Accelerator who snapped back at her. The white monster himself did not bother arguing. He simply asked the most relevant question.

“Was that all of them?”

After tossing the other two onto the silver sand filling a London street, Accelerator leaned on his modern design cane and gestured toward Westminster Abbey with his slender chin.

“If so, they won’t last fifteen minutes.”

“No, I would think not. No matter how hard you try, attempting to use magic to kill those magicians from the Golden cabal’s heyday is a mistake. With each Crowley’s Hazard killed, more of my power should be rising to the surface as the defrag continues, but…that is not enough to deal with Mathers. He can denote any aspect of the world with his complete control of the four most basic elements. Challenging that with the supernatural is as useless as aiming a flashlight at the sun.”

“Is the difference in power really that great?”

“Yes, but there is no need to panic.”
- To Aru Majutsu no Index NT 21 Chapter 1 Part 1
[...]
So why had this one broken?

The demon thought about that small wooden panel’s combination of sketch, colors, and wax coating.

It may have been a similar data transmission method to heating a turtle shell in the fire and reading the future in the cracks.

(Mathers and a few of the others have taken damage and Berridge was destroyed. Damn, this couldn’t have been by chance. I guess they’ve figured out the trick by now.)

Looking just at their specs, Mathers was superior to Aleister no matter what the latter tried. And with the Golden army at his command, they could easily slaughter a swarm of Crowley’s possibilities.
- To Aru Majutsu no Index NT 21 Chapter 3 Part 1
[...]