Lufthansa was definitely an amazing airline for me. Lufthansa has tough competition from Chennai. The main passengers from Chennai are the passengers to North America. Lufthansa has competition with Emirates, Qatar, Etihad, Jet Airways- Air France and British Airways. Considering the fact that almost all the passengers were transiting through Frankfurt the competition is tough. Lufthansa has to also excel British and Jet Airways in the European customers and right now I think they are second (with Jet Airways at the top and British at the bottom).
Chennai International Airport needs a huge upgrade in terms of service and cleanliness factor . Considering the fact the Chennai International Airport is the third largest airport in India it is far behind than the other airports in India. Hyderabad and Bangalore airport with their stunning interior and carpeted floors Chennai International is nothing. They also have to improve in efficiency, there is always a traffic jam in front of the airport, the check-in lines are ridiculously long, immigration takes about an hour and the waiting lounges (for economy) are so hot.
Frankfurt on the other hand, very nice . It is a complete opposite of Chennai airport