Kronos vs. Sargeras
Kronos and Sargeras are actually both "Titans", although they come from two worlds, which exist as games: AOM Titans, and Warcraft III.
BUT Kronos came from real mythology...
Sargeras came from WIII mythology...
Kronos: Youngest of the Titans. Son of Gaia and King of the Titans. Imprisoned but escaped from Tartarus (in AOM). Note: Kronos was portrayed in the game as a huge monster-like creature with 40,000 hitpoints and 70 attack.
Sargeras: Top badguy. Most powerful badguy in WarC III. Champion of his race. Commands Kil'jaeden, Archimonde, Mannoroth, even Lich King...
Unknown hitpoints and attack.