That made her sacrificial death, with the knowledge it prevented defeat without ensuring victory, quite redemptive. In that respect I would say (at the risk of sending Cannoli into a blind rage ) she was a better Christ figure than Rand, because not only was her death sacrificial but she herself was "obedient unto death," to the Pattern if only tacitly to Rand as Dragon Reborn.
Not entirely sure on this point. Now, I'm not a religious man myself, but from my understanding, part of the power of Christ's sacrifice was that he knew beforehand that he would have to sacrifice his life, it wasn't a sudden choice at the end.
In this regards, Rand is more like that, as he accepted (albeit reluctantly) that he would have to sacrifice his life (even if in the end he didn't have to) to save the world, whereas for Egwene it was only at the end for her that she made that decision, and potentially having lost Gawyn at that point made that decision easier. Also, on the other hand, I'm not sure that she had to die in order for the world to survive, however she died in order to prevent more deaths that would have otherwise occurred.
On the other hand, I don't think that either of them were really Christ-like, as Christ always made the 'good' decisions, whereas both Egwene and Rand made some rather harsh decisions, even if for the 'greater good'.