Well what can I say - i found the mechanics, gameplay and story more interesting. The story was not like the greatest thing ever but nor was that true in bioshock - i just found it more interesting. The ending twist which i did not totally expect but suspected is somewhat similar to a book i read a long long time ago though I cannot remember the exact name it tells the story of a person who is but then at the end isn't.
Oh and yea not as many freakin turrets.
I prefer the gameplay and storyline of 1&2 and the environment of Infinite. I feel that the storyline ambitions of the latter were too ambitious to fully realize, but man did they ever create an immersive world to take in.