Considering a Economy Ticket on a Chinese Airline

I just had a discussion with a good friend whose parents are considering a trip to Bangkok on China Airlines in economy class. I hope they consider this before hitting "process payment": A China Airlines Boeing 747-400 has 14 first class seats, 64 business class seats and 319 economy class seats. A United Airlines Boeing 747-400 has 14 first class seats, 73 business class seats and 260 economy class seats. A flight from the US to China takes anywhere from 11 to 16 hours.