Tim Cook doesn't have the vision or drive that Jobs had. Cook is just your average bottom-line CEO type. With Jobs, you could truly see that he was genuinely invested with making amazing products and services. However with Cook, his phony enthusiasm is not very convincing and I highly doubt he's as involved with Jony and his team as Jobs clearly was. Cook is a competent bean counter but that's not the type of person who should be running Apple.
I wouldn't say that.
As far as we know, he delegates a lot of day-to-day work.
Sure, Steve basically checked into Jony's lab probably once a day for half an hour or more - but due to the lower "walls" between the teams, I suspect the products still get a good review before they ship.
And he doesn't seem to be afraid to make decisions (just ask Scott F.). Just less knee-jerk reactions.
Steve Jobs had a lot of those and the people around him had to mitigate and contain a lot of them, if you read the Isaac's biography.
Were there any real, iPhone4-style blunders in the post-jobs world?