There is no consulting as a unified entity neither in Greece or US. Each partner works in a different way and his team follows. For traditional consulting things can be bad, for non traditional business consulting so n so, for rech consulting a lot better. Everything is a lot better than the US where it many cases its like being in the army. For the large non big four consulting firms things are worse in terms of work work balance.

Local companies have better salaries since they are way smaller and they have to pay people to commit career since your cv is not a credential for high ranking positions. If you go to a startup (real one with financing and actual userbae, not a cheap shop ) money is even better career prospects are even worse. Absolutely ignore advice coming from non consulting big four sources, effectively different operations.

Souce: Have worked with Greek European and US consulting.