I just don't consider it the same as "live." I've done "live PAs" with the following setups:
1.) 1 person on sequencer + 1 person on keyboards + 1 person on visuals.
2.) 1 person on Traktor + 1 person on keyboards + 1 person on visuals.
3.) 1 person on Traktor + 2 people on keyboards.
4.) 1 person on sequencer and keyboards + 1 person on visuals.
5.) 1 person on Ableton and keyboards + 1 person on additional Ableton rig + 2 people on circuit bent noisemakers + 1 person on visuals.
From an audio standpoint, the only time I came close to doing a Live PA by myself was situation 4, which I only did twice. In my opinion, if there's no true way to make a noticable mistake, or to truly improvise off the cuff, it's just hard for me to consider "live."