Unfortunately I can see Eurowings blinking first on one or both of their flights.
To sustain 4 flights to Hamburg on some days is asking a lot. Mind you, Hamburg is well worth a visit. The wife and I spent a long weekend there about 3 years ago and really enjoyed the park, lake, harbour and old city. Particularly impressive was Miniatur Wunderland with the variety of model railways and their superb scenery set in different parts of the world, and of course the model airport with planes landing and taking off.
The LH flights were busy but not full (but it was a few years back) so it will be interesting to see what happens with Ryanair joining the fray.