There is no driving to a delta in 2012. If that were true we would not be seeing big gaps on race day between team mates, and Rosberg would not have been 0.5 faster than Schumacher at China. Under driving a car is what tyre management is about anyway, but the key is going fast while doing it. The ones complaining just lack the skill or get frustrated by it.
Teammates will always have differences duw to their strengths and weaknesses, the circuits they prefer, their ability (luck?) to set up the car properly for a given weekend, etc. If we look at the comments, not only of MS (who is one of the few that has nothing to loose), but also of Rosberg (before he backpedalled for some reason), Hamilton ("is this pace ok guys?"), Kimi, JB and ALonso, it seems clear that, at least, they are not able to push as much as we fans would like to in order to see on track fights. And that, just that, is already a shame.
What about all the other cars they fought? Kimi came from 11th - 2nd at Bahrain which means he fought a lot of cars on the way. The reason he couldnt fight Vettel was because he was too slow, same as Alonso.
They must have been either irrelevant or pretty boring passes (DRS on lesser cars or on other cars with worse tyres) because it seems the miriad of passes Kimi made, did not catch the eye of the camera directors? In any case, it's the fight between evenly matched cars we want to see (because that's when the possibility of a great fight lies), so if they were able to catch up to someone, there should be a fight coming. Instead, there is one attempt at either catching or passing and then that's it, the tyres won't allow more. And it's not like we are making this up, Kimi said so, Alonso said so, Hamilton said so. It's not the number of passes, it's their relevance and quality that matters...