From what I understand eurozone are not asking Ireland to make any more sacrafices than what has been asked of Greece.
The difference is that a significant amount of Greek debt reaches maturity shortly and if they cannot replace it the country faces meltdown This was not the situation faced by Ireland. It is for that reason that Greece is being helped.
Greece has not made any sacrifice yet. And I would say they never will.
Much of the Greece economy is underground which will never be taxed. Same as in Spain.
Besides, the unions are very strong and they will mobilize people to fight against cuts…