One more thing in addition to all the truth above. It is 900 block hours in your LCC but it may be 1,200 block hours at EK. Don't underestimate the effect of factoring that EK is applying to augmented flights. For example on a 15:45 SFO-DXB I only got 7:00 credit as stick time.
In addition you will be forced to show up one hour before checkin. It adds up.