While Sony got Uncharted , God of War , Ratchet and Clank and many more Microsoft not behind at all with awesome Gears, Halo or Forza's.All comes down to personal preference now.
Do you prefer microsoft or Sony's first party games?
I'm a sucker for Sony first party games since beginning infact eat, sleep,drink on Sony's first party games as i love playing them so much. But also love me some Gears. Halo's started to go downhill with 343 on helm... imo so stopped following it after Halo 4.