Am I the only one who loved the finale of the first season? There was enough sacrifice that the victory did not feel cheap, and evil was stopped in an exciting showdown. I was not as happy with what the second season did with the fallout from that episode, but there were some cool future possibilities contained in that finale.
I thought it was a good ending, yeah. I think some folks were disappointed by the fact that NYC didn't, once again, get toasted.
But the idea that it was his brother who essentially gave his life (no spoilers for S2 here!) to save him... that was the big event IMHO. It was an emotional, rather than a violent, climax.