It just felt a little farfetched to me, we saw the Strike COMPLETELY OBLITERATED from that attack back in SEED. He survived that?! <_<
You can see why that's been bugging me.
On another note, SEED Destiny's ending felt rushed, though it was immensely satisfying seeing Athrun give Shinn a piece of his mind with the Justice. But Shinn never did make amends with Kira. There must be another ending surely!!