Okay, so this I don't understand. When Tidus starts to fade, and he jumps off the ship, he gives Jecht a high-five. But wait---what is Braska doing beside him? Is it because Braska once defeated Sin? And I think I saw Auron by him, too, but I don't remember things that well...even though it was about 13 hours ago.
EDIT: Yes, Auron is there...I just downloaded the ending.