One flies a 737 and the other an A380
Regarding salaries, its not exactly new knowledge that on
average, a widebody jet pilot earns more than a narrowbody jet pilot and the latter earns more than a turboprop pilot. Whether thats fair or not is another discussion (i think its not) but doesn't change the fact that the market is as it is.
With the new updated figures, the annual salary is 108k€ + BH pay, at 800h / year somewhere around 122k€. Not exactly the best offer but still far from being the worst. Have a look at the Eurowings Europe salaries for example.