I agree with most of what you said but tackling is unrealistically better in 2011. The tackles mostly resulted in winning the ball from the hopeless attacker. 2012 foundation is great but the execution is not perfect so let's hope it gets better.
For me, the defending is genius, but slightly out of balance. It's the best defending system I've ever seen in a game by a mile, but it's just a smidgeon too hard. A small tweak and it's there.