It was a good innings from Pietersen, but one that lacked acceleration. I think part of the problem is that he's not a very good slogger. He's not a bad one and has good power, but when he needs to slog, he's not really the man you'd choose in this situation. Since starting his international career he has lost a bit of brutality and become more of a batsman.
The main problem in the innings though was Paul Collingwood; a crabby 40 that robbed England of momentum. Cook and Bopara too didn't score quickly enough. England would easily have made 300 otherwise, but as usual the middle-order has to make up the short-fall.
And England will still lose...