How do hospitals justify the incremental robot costs for TKA when the outcomes are found to be the same ?

This is a real question? Please explain this to me @ tiger@tigerbuford.com

Robot-Assisted vs. Manual Total Knee Replacement: It’s a Tie…for Now (Cleveland Clinic)Robot scores better in length of stay and home discharge; manual scores better in flexion and operative time.
Robotic arm-assisted total knee arthroplasty (TKA) currently has some advantages over manual surgery, although either technique is effective. With time, though, robot-assisted surgery is expected to emerge as the procedure of choice for TKA.
A group of Cleveland Clinic orthopaedic surgeons recently analyzed 12 categories o...