Call of Duty: Modern Warfare 3 - Gameplay Trailer

The first teaser trailer for Modern Warfare 3 gave us bits of audio and a sort of matrix image of what looked like New York being bombarded from the coast as well as other teasers for different countries. With all of these battles it seems as though the entire world is at war and about half-way through the new trailer you see the "WW3" that shortly after is flips to the "MW3". So it seems that the next level of MW is to go all out for a modern day world war. Which FPS will you be buying by the end of the year? Will it be this grand MW3, the ultra realistic Battlefield 3, or Resistance 3?