Would AIs make better professionals than humans?

Doug Johnson posits:

One quality that AI may put to extremely positive use would be objectivity – a lack of personal biases or prejudices. Properly programmed, my financial advisor AI should not be advising me to invest in areas where the advisor would get the biggest fee, but where I would stand to make the biggest return at the lowest risk. Would my AI dentist or doctor only recommend those procedures and medications that have proven rate of effectiveness not the most kickback from pharmaceutical companies? Would an AI intelligence agent be more likely to uncover double-agents in the office?

Of course, the burning question in education is “Would AIs make better teachers than humans?”