Here's a little crossover versus PS3 versus Xbox 360 you decide which is the winner.
Demon's Souls versus Ninja Blade(lol) Valkyria Chronicles verus LOTR Battle for Middle Earth II MGS4 and Metal Gear Online versus Splinter Cell Conviction ICO and SOTC versus Shenmue II and Panzer Dragoon Orta (PS2 vs Xbox) White Knight Chronicles I and II versus Lost Odyssey Heavy Rain versus Alan Wake Disgaea 3 and 4 versus The Last Remnant and Infinite Undiscovery Yakuza 3 and 4, Dead Souls versus Dead Rising and Fable II and III Gran Turismo 5 XL versus Forza Motor Sport 1-5 Katamari Forever versus Beautiful Katamari Warhawk, Resistance 1-3 and Killzone 2 and 3 versus Halo 3, OSDT, Reach, 4 LAIR versus Ace Combat 6 Folklore versus Blue Dragon Hot Shot's Golf Out of Bounds versus DOA Rumble Rose XXX Super Sleepover DC Universe Online versus Phantasy Star Universe and FFXI Heavenly Sword versus Uncharted 1-3 versus Gears of War 1-3 Journey and Flower versus Viva Pinanta Series Tales of Graces F versus Tales of Vesperia FF1-FFIX versus Guardian Heroes, Minecraft, Shadow Complex
Winners easily -
Demon Souls Valk Chronicles MGS only because of 3 SoTC, though being up against Shenmue 2...iffy here Lost Odyssey Heavy Rain Disgaea 4 Yakuza 3 and Dead Souls (Sorry 4, but you sucked and only gave us good characters, nothing more) Forza Neither. Gotta go with Halo Neither Folklore! DoA. I mean come on. Boobs vs golf? GOLF? PSU Uncharted 1-2 Journey Vesperia FF9
Not a chance. The stories in PS3 exclusives far outstrip the stories in 360 exclusives. And yes, it is because the 360 turned into an FPS-centered console, while the PS3 evolved into a storytelling console, which, IMO, is the most important thing.