My gut says Spider-man. I watch death battle, and even though I can't take everything they say at 100%, The Terminator gave Robocop a good fight just on speed alone, even though Robo still won thanks to be as durable as a tank. Spider-Man in comparison as both strength and agility, along with the webs, which I assume would make him harder to hit. Of course his webs wouldn't keep Robo down long but given how slow he is Spidey could still take the advantage. Robo's best bet would be getting a surprise shot at Spidey at close range, but the spider sense would make that hard to pull off.