Having lived, driven, and crossed roads in both -- what I find is essentially that drivers from poor systems pay far more attention, but the system is a
lot more effective than attention.
The difference here is one of stability: in a developing country, I can just walk across a street (often there is no traffic light) by essentially signalling with my body language -- both I and the drivers are paying attention. And if one party fails, the other has a good chance of catching that mistake.
Now, in a developed country, neither side is paying attention. If I walk across the street, I'm in danger, no matter how clear my body language (I tried it on British streets a few times -- it works in some areas, but usually very poorly!), and no one expects a crazy driver to come barreling through a red light.
The developing countries fall behind because in the crazy * sane intersection, sometimes the sane person is just not fast enough -- whereas the crazy * crazy intersection is extremely dangerius and happens often enough.
On the other hand, a developed country makes every interaction sane * sane regardless of the personalities or moods of those involved -- but God forbid a bit of crazy leaks out!