Create a digital illustration of Batman and Superman engaged in an epic battle in a gritty urban environment. Batman is perched on top of a building, while Superman hovers in mid-air, ready to strike. The scene should be dark and moody, with a stormy sky and rain pouring down. Batman is armed with his trusty utility belt and a Batarang, while Superman is using his heat vision to blast through buildings. The two heroes should be evenly matched, with neither one gaining the upper hand. The overall mood should be intense and action-packed, conveying the sense of a fierce rivalry between two legendary superheroes. | Anything