This property is on a street of identical duplexes.

Your question lets me know that you really need to better understand your own investor identity.  

It is in a common wall cavity (2X6 studs) between two apartments with identical mirrored configurations.Along the wall left to right is bathroom sink, toilet, bathtub, then a wall, then kitchen sink. 

They are only now getting around (this spring) to verifying that the person booking has a valid identity and credit card. 

If I wanted to write a very long post I would tell you the story of two Identical twin brothers I started dealing with in 1971, one was greedy one wasn't.

Pretty good insights in it as to how easy it is to find you steal your identity, etc. and what you can do to prevent it.

We just had to identical units in the area sell for $110k, in the same condition, but vacant. 

It's about their identity, the feel of purposefulness, their pride.

Does this mean that Warren Buffett is investing suboptimally, just because his exit strategy isn't identical for every asset that he purchases?

You may know that identity theft is the number one non-violent crime in the country.