[robotresearcher]

> There isn't a single study showing its better.

The link you provide below says

"When it comes to prostatectomies, urologists have found the outcomes for da Vinci robotic surgery to be much better than for laparoscopic surgery and use this method in more than 90% of these procedures [...] Robotic surgery also appears to provide clinical benefits for some, but not all, types of head and neck surgery."

It also reports negative value overall for gynecological surgeries.

The evidence you provided suggests it's better for some things and not others, which seems like the expected case.