[SPOILERS AHEAD]
Kratos' achievements:
-Killed not one, but two, gods
-Almost killed Zeus, the king of the gods
-Also killed all sorts of historical and mythological figures, including, but not limited to: Theseus, Icarus, the Fates, Medusa, and Jason (of the Argonauts)
-Successfully started a second war between the Titans and the remaining gods
-Escaped Hades. Twice.
Sephiroth's achievements:
-Killed a defenseless flower girl. Via a cheap sneak attack.
-Got killed by a long-haired emo kid and his friends.
I don't think this would be much of a contest.
"'Casual games' are something the 'Game Industry' invented to explain away the Wii success instead of actually listening or looking at what Nintendo did. There is no 'casual strategy' from Nintendo. 'Accessible strategy', yes, but ‘casual gamers’ is just the 'Game Industry''s polite way of saying what they feel: 'retarded gamers'."
-Sean Malstrom