I did not play against AI in FIFA 16. 17 feels quite good, it apparently has adaptive AI. I've played several games and all were fun, Tottenham game they figured me out halfway through the game and even though I was leading 1-0 at half-time, they used their wingers a lot in the second half and scored three. Against Middlesbrough I dominated the game and won easily, then had a tight game with Leicester who played counter attacking game and drew 1-1. I might actually start MyCareer this year and play full seasons with United, the feeling of Premier League is absolutely great. Shame you have to create your own manager and can't just use Mourinho.
Graphics are absolutely freaking gorgeous.