It's closer to the second if anything, but it's still very vastly different, I'd argue it's more nothing a like either. Consequently I'm not sure whether you should buy it solely on just liking the first two. If you're going to buy it, buy it for the gameplay over the story. Personally I didn't mind the story, it was passable(Not great, mind), and I got the gist of what was going on, however a lot of people seem to hate it. The gameplay is still pretty enjoyable though, I mean i'm not a big shooter fan myself, but it kept me entertained. It's a third person shooter with added features. Such as being able to jump into different soldiers bodys, allowing you to get behind an enemy, or if the soldiers low on life, jump to one with more health so you dont die etc. Also theres a level up system, DNA equip system and other unlockables meaning theres quite a bit of replayability.