I’m not saying that this would be easy, and it might have to go into multiple rounds but Robocop would emerge the victor when pitted against the T-1000. One of the T-1000’s strongest attributes is its cloaking abilities. Even if it were to disguise itself as Lewis, that would fail to deceive Robocop as he’d be able to detect an absence of a heartbeat. Robo also has a proven track record when fighting other robots. He’s toppled ED-209, Cain, and robot ninjas. T-1000 was defeated by antiquated Terminator model. Although there was human interference.
It wouldn’t be the first time Johnny 5 has taken on a squad of killer robots and emerged the winner. However, those robots weren’t nearly as bloodthirsty as the machines in Chopping Mall. 5 might find himself at a disadvantage having uninstalled his laser. It really comes down to his ingenuity and how intensely he studied and memorized Die Hard.
ADVANTAGE: Johnny 5.
Assuming that we are talking about Data before he installed Dr. Soong’s emotion chip, he would easily take this match. He’s cold, and Bishop cares too much.