2 million 360 consoles shows it's worth some effort , a presence is better than no presence at all .
Turning up at TGS isn't going to cost them a fortune plus if they don't it leaves the floor open to Sony to show off a lot of new reveals and expand on it's vision for PS4's future , without any counterpoint by way of MS showing what they to have in store fore the public , also it gets more than just Japanese coverage.
Research shows Video games help make you smarter, so why am I an idiot