Jack didn't feel much for the memory, but he wasn't feeling much for anything anymore, after the one that came before it. He recognized the desire to kill someone, and the need for revenge.
He and Jason didn't share much, didn't really emotionally overlap. But though he didn't feel it, Jason had been there for the memories too, for the two girls, and now for this. The girls had made him pull back in fear and disgust and hate, but they hadn't torn him up the way they had Jack. All they'd done was remind him of why he did what he already did, and kick his ever-present anger into gear.
The memory of the court room was different, though. He recognized the man at court from pictures and news clippings he saw after Bruce picked him up, but the way things played out wasn't the way he remembered reading it. It had to be the other Bruce, then, the one that was through the door.
He knew Bruce often had a desire to kill, but held himself back with his idiot ideals. This, though, was different. This time, he'd wanted to, and the only reason he hadn't gone through with it was because someone had gotten there first. That was new, and strange, and it just made him angrier. How dare he be so self-righteous when he'd been ready to kill a man in cold blood?
Jack didn't think much of it. He was looking at the rust colored blood under his fingernails, and pretending the woman on the windowsill was gone.