Hey Sebastian, they are indeed slightly different – the underlying pitch shifting algorithm differs between the two. Additionally, the UltraChannel controls map to the following, which you could set up in Factory to get close in sound:
- Size controls shift amount – left channel shifts up, right channel shifts down
- Depth controls delay time (slightly asymmetrically, left channel can be delayed slightly more than right channel)
- Width controls the mix between left / right voices
Hope that helps!