Did wico make a joystick for the Atari 2600 AND a joystick for the 5200? Is the only difference between these joysticks the fact that one comes with a y-cable to allow it to work on the 5200?

In other words, will a Wico Command Control joystick for an Atari 2600 work on the 5200 as long as you have a y-cable?