Agree 100% that the experience is similar in NYC. Non-yellow cabbies in NYC seem much less experienced (I mean on average, of course) with urban traffic -- when I'm cycling, I am much warier of the black uber cars than of the yellow cabs -- the yellow cabs are aggressive too, but are very experienced and their aggressiveness is thus very practiced and predictable, easy to deal with and not really usually a danger as long as you know the drill

And when I'm on the other side and need to take a cab, I much prefer to take a yellow cab, because they get there faster. Even with GPS, a dense urban environment is filled with little foibles and tricks that only experience can handle