"I didn't want to deal with the headache you'd cause if I called in Superman." He also didn't want to give the villain a reason to try and go after Superman. Jeremiah was the type to hold grudges. To find entirely personal and painful ways to deal with someone who'd ruined his fun. This was a game to him, Batman was the other player.
His expression didn't change as the other approached and flicked at the ear of his costume. He was aware of the other's movements, ready for any sort of danger even if he didn't seem it. "And just what is it you want this time?"