Other mistake: When everything is moving in slow motion, to indicate how fast Black Adam is supposed to be moving, one of the mercenaries throws a grenade from a distance that is shown moving faster than the lightning moving through the bodies. It reaches Adam before the truck he just ripped apart starts to fall.
Suggested correction: The grenade isn't moving faster. Black Adam is moving towards it, he closes the distance. You see it only turns twice before he grabs it and gets to ground level, shove it in the guy's mouth, and then he's back in mid-air in the next shot.
Watch the scene again. Black Adam isn't even in the shot when the grenade is moving faster than everything else. The grenade is moving away from the guy that threw it. He's even moving as fast as the lightning.
