Not the GP but my fiance is also an OB and is also qualified on robotic surgeries. Robotic candidates are typically more difficult cases than more traditional surgeries, so even an equal prevalence of positive outcomes would indicate that robotic surgeries are worth the additional training/time/expense/etc.

I think it'd be pretty hard to do a true apples-to-apples comparison. You'd want to find traditional surgeries that were complex enough that robotic surgery would be indicated, yet for some reason they went ahead with traditional surgery anyway. Almost by definition this would push you more toward emergent surgeries which have worse outcomes overall given their acute nature. You could probably find areas where transfer to a facility with a robot would take too long but you're bringing in a lot of other confounding variables (comparing robotic surgeries at a well funded academic institute with lots of residents and fellows to a small poorly staffed hospital in the sticks, for example).