There is no seniority list at EZY.
Letīs say there is a FO, who worked 8 years for Air Berlin. He was due to upgrade to captain next year.
Joining EZY he'll get his upgrade much quicker than with Eurowings Germany (where a seniority list has existed for decades).
Thatīs why those Air Berlin pilots prefer a new job with EZY . (and because the package for a lowcost airline is good)