I'm also not an airfare expert. But I flew from Venice Italy to California last year. Lufthansa flight had bigger more comfortable seats (economy class). The staff was very friendly. I would fly them again.
Air India flight was half full so I had tons of room. However, the plane was old it made me nervous. Also the food was spicy Indian food. Which I enjoyed, my hubby not so much.

The Air India flight was a good deal and the staff were friendly also. I saw my first Bollywood movie, it was pretty good. That movie was subtitled the second film was an american movie. If the plane had been full it would have been cramped. I fly economy class. I wish I could fly first class they have their own toliets and I'm jealous.