Spent a fair bit of time in Asia. The Hong Kong MTR is great (and, as you say, cheap). The MRT in Taipei is similarly cheap and reliable. In Japan, meanwhile, you used to get an official apology slip from the train company if the train was more than a few minutes late that you could give to your boss to excuse your lateness. They hardly ever were late, mind. They even resist the many small earthquakes that occur out there (though the bigger ones are more of an issue).
Perhaps I should take to replying "wouldn't happen in Japan".
Same in Switzerland...I used to travel quite often between offices in Zurich and Geneva. Never, ever late.