the gameplay is just way different man, in ps u have aircrafts and tons of different vehicles and its based on hacking towers and base controlled by one out of 3 factions, the size of land u can travel on is about a milion times bigger then global agenda id said. also this open world u talk about isnt an open world.. its just 1 big zone, not a world. and from what i read its only pointed towards people till level15.
anyway looks like u never even played planetside. in PS u have multiple continents linked to eachother with 10-20 bases and towers in each of these continents and where hundreds of people at the same time can battle over 1 base, THAT is an open world. lets see how GA's open world turns out lol.
i have nothing against GA its a fun game, but PS has much more to offer really.











